2014–2026 performance history

Boston College over time

Season-by-season offense and defense game grades, with head-coaching changes placed on the timeline.

ACCHead coach: Bill O'BrienView Boston College games →
Offense · 2026 estimate35.7/100

19.5 average through 2 games

40.4 prior · 8 equivalent games
Defense · 2026 estimate28.6/100

41.7 average through 2 games

25.7 prior · 8 equivalent games

The trajectory

Game and Season Unit Ratings

Each small dot is one offensive or defensive game rating, arranged in the order played. For completed seasons, the short bar is that season’s average game rating. Both dot and bar values are labeled on a percentile scale. For 2026, the bar is the Bayesian estimate, while the outlined circle is the empirical games-only mean. Labeled background bands show each head coach’s era.

Boston College individual offense and defense game grades by seasonEach small point is one game. Horizontal bars show completed-season means and the Bayesian estimate for 2026. The outlined 2026 circle is the empirical games-only mean. Alternating labeled bands identify head-coaching eras.Addazio · ’14–’19Steve Addazio, 2014–2019Hafley · ’20–’23Jeff Hafley, 2020–2023O'Brien · ’24–’26Bill O'Brien, 2024–2026offenseGame-grade percentile · higher is better9975502512014 Week 1: Boston College at Massachusetts · W 30–7; offense 86.3 percentile2014 Week 2: Boston College vs. Pittsburgh · L 20–30; offense 11.4 percentile2014 Week 4: Boston College vs. Maine · W 40–10; offense 49.1 percentile2014 Week 5: Boston College vs. Colorado State · L 21–24; offense 62.9 percentile2014 Week 7: Boston College at NC State · W 30–14; offense 68.7 percentile2014 Week 8: Boston College vs. Clemson · L 13–17; offense 30.8 percentile2014 Week 9: Boston College at Wake Forest · W 23–17; offense 69.8 percentile2014 Week 10: Boston College at Virginia Tech · W 33–31; offense 65.1 percentile2014 Week 11: Boston College vs. Louisville · L 19–38; offense 69.2 percentile2014 Week 13: Boston College at Florida State · L 17–20; offense 52.6 percentile2014 Week 14: Boston College vs. Syracuse · W 28–7; offense 28.6 percentile2014 Week 1: Boston College vs. Penn State · L 30–31; offense 85.6 percentile2015 Week 1: Boston College vs. Maine · W 24–3; offense 4.7 percentile2015 Week 2: Boston College vs. Howard · W 76–0; offense 80.9 percentile2015 Week 3: Boston College vs. Florida State · L 0–14; offense 9.3 percentile2015 Week 4: Boston College vs. Northern Illinois · W 17–14; offense 16.8 percentile2015 Week 5: Boston College at Duke · L 7–9; offense 11.9 percentile2015 Week 6: Boston College vs. Wake Forest · L 0–3; offense 2.8 percentile2015 Week 7: Boston College at Clemson · L 17–34; offense 22.9 percentile2015 Week 8: Boston College at Louisville · L 14–17; offense 1.1 percentile2015 Week 9: Boston College vs. Virginia Tech · L 10–26; offense 1.8 percentile2015 Week 10: Boston College vs. NC State · L 8–24; offense 1.4 percentile2015 Week 12: Boston College vs. Notre Dame · L 16–19; offense 16.7 percentile2015 Week 13: Boston College at Syracuse · L 17–20; offense 8.8 percentile2016 Week 1: Boston College vs. Georgia Tech · L 14–17; offense 25.0 percentile2016 Week 2: Boston College at Massachusetts · W 26–7; offense 8.9 percentile2016 Week 3: Boston College at Virginia Tech · L 0–49; offense 1.6 percentile2016 Week 4: Boston College vs. Wagner · W 42–10; offense 19.5 percentile2016 Week 5: Boston College vs. Buffalo · W 35–3; offense 28.6 percentile2016 Week 6: Boston College vs. Clemson · L 10–56; offense 25.8 percentile2016 Week 8: Boston College vs. Syracuse · L 20–28; offense 5.3 percentile2016 Week 9: Boston College at NC State · W 21–14; offense 40.4 percentile2016 Week 10: Boston College vs. Louisville · L 7–52; offense 4.5 percentile2016 Week 11: Boston College at Florida State · L 7–45; offense 0.6 percentile2016 Week 12: Boston College vs. UConn · W 30–0; offense 39.9 percentile2016 Week 13: Boston College at Wake Forest · W 17–14; offense 9.8 percentile2016 Week 1: Boston College vs. Maryland · W 36–30; offense 18.2 percentile2017 Week 1: Boston College at Northern Illinois · W 23–20; offense 27.2 percentile2017 Week 2: Boston College vs. Wake Forest · L 10–34; offense 2.6 percentile2017 Week 3: Boston College vs. Notre Dame · L 20–49; offense 37.7 percentile2017 Week 4: Boston College at Clemson · L 7–34; offense 21.9 percentile2017 Week 5: Boston College vs. Central Michigan · W 28–8; offense 49.3 percentile2017 Week 6: Boston College vs. Virginia Tech · L 10–23; offense 32.7 percentile2017 Week 7: Boston College at Louisville · W 45–42; offense 87.9 percentile2017 Week 8: Boston College at Virginia · W 41–10; offense 58.1 percentile2017 Week 9: Boston College vs. Florida State · W 35–3; offense 66.1 percentile2017 Week 11: Boston College vs. NC State · L 14–17; offense 18.4 percentile2017 Week 12: Boston College vs. UConn · W 39–16; offense 17.8 percentile2017 Week 13: Boston College at Syracuse · W 42–14; offense 75.2 percentile2017 Week 1: Boston College vs. Iowa · L 20–27; offense 54.3 percentile2018 Week 1: Boston College vs. Massachusetts · W 55–21; offense 75.0 percentile2018 Week 2: Boston College vs. Holy Cross · W 62–14; offense 43.8 percentile2018 Week 3: Boston College at Wake Forest · W 41–34; offense 62.4 percentile2018 Week 4: Boston College at Purdue · L 13–30; offense 6.1 percentile2018 Week 5: Boston College vs. Temple · W 45–35; offense 53.8 percentile2018 Week 6: Boston College at NC State · L 23–28; offense 50.2 percentile2018 Week 7: Boston College vs. Louisville · W 38–20; offense 3.8 percentile2018 Week 9: Boston College vs. Miami · W 27–14; offense 67.3 percentile2018 Week 10: Boston College at Virginia Tech · W 31–21; offense 20.1 percentile2018 Week 11: Boston College vs. Clemson · L 7–27; offense 1.0 percentile2018 Week 12: Boston College at Florida State · L 21–22; offense 35.2 percentile2018 Week 13: Boston College vs. Syracuse · L 21–42; offense 51.1 percentile2019 Week 1: Boston College vs. Virginia Tech · W 35–28; offense 55.7 percentile2019 Week 2: Boston College vs. Richmond · W 45–13; offense 75.3 percentile2019 Week 3: Boston College vs. Kansas · L 24–48; offense 29.1 percentile2019 Week 4: Boston College at Rutgers · W 30–16; offense 37.6 percentile2019 Week 5: Boston College vs. Wake Forest · L 24–27; offense 64.8 percentile2019 Week 6: Boston College at Louisville · L 39–41; offense 69.2 percentile2019 Week 8: Boston College vs. NC State · W 45–24; offense 87.9 percentile2019 Week 9: Boston College at Clemson · L 7–59; offense 19.6 percentile2019 Week 10: Boston College at Syracuse · W 58–27; offense 98.6 percentile2019 Week 11: Boston College vs. Florida State · L 31–38; offense 71.9 percentile2019 Week 13: Boston College at Notre Dame · L 7–40; offense 27.3 percentile2019 Week 14: Boston College at Pittsburgh · W 26–19; offense 66.8 percentile2019 Week 1: Boston College vs. Cincinnati · L 6–38; offense 0.4 percentile2020 Week 4: Boston College vs. Texas State · W 24–21; offense 8.4 percentile2020 Week 5: Boston College vs. North Carolina · L 22–26; offense 43.7 percentile2020 Week 6: Boston College vs. Pittsburgh · W 31–30; offense 27.3 percentile2020 Week 7: Boston College at Virginia Tech · L 14–40; offense 36.0 percentile2020 Week 8: Boston College vs. Georgia Tech · W 48–27; offense 82.6 percentile2020 Week 9: Boston College at Clemson · L 28–34; offense 68.5 percentile2020 Week 10: Boston College at Syracuse · W 16–13; offense 37.3 percentile2020 Week 11: Boston College vs. Notre Dame · L 31–45; offense 40.1 percentile2020 Week 13: Boston College vs. Louisville · W 34–27; offense 81.7 percentile2020 Week 14: Boston College at Virginia · L 32–43; offense 59.2 percentile2021 Week 1: Boston College vs. Colgate · W 51–0; offense 71.5 percentile2021 Week 2: Boston College at Massachusetts · W 45–28; offense 49.7 percentile2021 Week 3: Boston College at Temple · W 28–3; offense 31.1 percentile2021 Week 4: Boston College vs. Missouri · W 41–34; offense 77.3 percentile2021 Week 5: Boston College at Clemson · L 13–19; offense 26.0 percentile2021 Week 7: Boston College vs. NC State · L 7–33; offense 7.4 percentile2021 Week 8: Boston College at Louisville · L 14–28; offense 9.9 percentile2021 Week 9: Boston College at Syracuse · L 6–21; offense 2.2 percentile2021 Week 10: Boston College vs. Virginia Tech · W 17–3; offense 39.1 percentile2021 Week 11: Boston College at Georgia Tech · W 41–30; offense 73.2 percentile2021 Week 12: Boston College vs. Florida State · L 23–26; offense 32.7 percentile2021 Week 13: Boston College vs. Wake Forest · L 10–41; offense 3.5 percentile2022 Week 1: Boston College vs. Rutgers · L 21–22; offense 12.6 percentile2022 Week 3: Boston College vs. Maine · W 38–17; offense 2.9 percentile2022 Week 4: Boston College at Florida State · L 14–44; offense 16.0 percentile2022 Week 5: Boston College vs. Louisville · W 34–33; offense 60.4 percentile2022 Week 6: Boston College vs. Clemson · L 3–31; offense 5.3 percentile2022 Week 8: Boston College at Wake Forest · L 15–43; offense 9.4 percentile2022 Week 10: Boston College vs. Duke · L 31–38; offense 49.3 percentile2022 Week 11: Boston College at NC State · W 21–20; offense 33.4 percentile2022 Week 12: Boston College at Notre Dame · L 0–44; offense 10.0 percentile2022 Week 13: Boston College vs. Syracuse · L 23–32; offense 27.5 percentile2023 Week 1: Boston College vs. Northern Illinois · L 24–27; offense 46.9 percentile2023 Week 2: Boston College vs. Holy Cross · W 31–28; offense 54.0 percentile2023 Week 3: Boston College vs. Florida State · L 29–31; offense 59.6 percentile2023 Week 4: Boston College at Louisville · L 28–56; offense 88.7 percentile2023 Week 5: Boston College vs. Virginia · W 27–24; offense 21.8 percentile2023 Week 6: Boston College at Army · W 27–24; offense 74.2 percentile2023 Week 8: Boston College at Georgia Tech · W 38–23; offense 76.6 percentile2023 Week 9: Boston College vs. UConn · W 21–14; offense 63.9 percentile2023 Week 10: Boston College at Syracuse · W 17–10; offense 14.7 percentile2023 Week 11: Boston College vs. Virginia Tech · L 22–48; offense 38.0 percentile2023 Week 12: Boston College at Pittsburgh · L 16–24; offense 45.4 percentile2023 Week 13: Boston College vs. Miami · L 20–45; offense 68.1 percentile2023 Week 1: Boston College vs. SMU · W 23–14; offense 95.0 percentile2024 Week 1: Boston College at Florida State · W 28–13; offense 50.9 percentile2024 Week 2: Boston College vs. Duquesne · W 56–0; offense 74.8 percentile2024 Week 3: Boston College at Missouri · L 21–27; offense 48.4 percentile2024 Week 4: Boston College vs. Michigan State · W 23–19; offense 52.3 percentile2024 Week 5: Boston College vs. Western Kentucky · W 21–20; offense 28.2 percentile2024 Week 6: Boston College at Virginia · L 14–24; offense 37.9 percentile2024 Week 8: Boston College at Virginia Tech · L 21–42; offense 41.5 percentile2024 Week 9: Boston College vs. Louisville · L 27–31; offense 27.2 percentile2024 Week 11: Boston College vs. Syracuse · W 37–31; offense 61.6 percentile2024 Week 12: Boston College at SMU · L 28–38; offense 89.3 percentile2024 Week 13: Boston College vs. North Carolina · W 41–21; offense 47.7 percentile2024 Week 14: Boston College vs. Pittsburgh · W 34–23; offense 58.0 percentile2024 Week 1: Boston College vs. Nebraska · L 15–20; offense 4.8 percentile2025 Week 1: Boston College vs. Fordham · W 66–10; offense 30.5 percentile2025 Week 2: Boston College at Michigan State · L 40–42; offense 38.9 percentile2025 Week 3: Boston College at Stanford · L 20–30; offense 22.9 percentile2025 Week 5: Boston College vs. California · L 24–28; offense 69.2 percentile2025 Week 6: Boston College at Pittsburgh · L 7–48; offense 6.8 percentile2025 Week 7: Boston College vs. Clemson · L 10–41; offense 21.3 percentile2025 Week 9: Boston College at Louisville · L 24–38; offense 61.1 percentile2025 Week 10: Boston College vs. Notre Dame · L 10–25; offense 15.7 percentile2025 Week 11: Boston College vs. SMU · L 13–45; offense 36.3 percentile2025 Week 12: Boston College vs. Georgia Tech · L 34–36; offense 78.8 percentile2025 Week 14: Boston College at Syracuse · W 34–12; offense 82.1 percentile2026 Week 1: Boston College at Cincinnati · L 15–34; offense 33.2 percentile2026 Week 2: Boston College vs. Rutgers · W 28–21; offense 10.0 percentile2014 offense season mean: 57.1 percentile2015 offense season mean: 9.3 percentile2016 offense season mean: 12.8 percentile2017 offense season mean: 39.8 percentile2018 offense season mean: 32.4 percentile2019 offense season mean: 53.3 percentile2020 offense season mean: 47.9 percentile2021 offense season mean: 29.4 percentile2022 offense season mean: 18.3 percentile2023 offense season mean: 59.4 percentile2024 offense season mean: 47.0 percentile2025 offense season mean: 40.4 percentile2026 offense Bayesian estimate: 35.7 percentile2026 offense empirical mean: 19.5 percentiledefenseGame-grade percentile · higher is better9975502512014 Week 1: Boston College at Massachusetts · W 30–7; defense 63.8 percentile2014 Week 2: Boston College vs. Pittsburgh · L 20–30; defense 43.3 percentile2014 Week 4: Boston College vs. Maine · W 40–10; defense 75.0 percentile2014 Week 5: Boston College vs. Colorado State · L 21–24; defense 29.3 percentile2014 Week 7: Boston College at NC State · W 30–14; defense 97.2 percentile2014 Week 8: Boston College vs. Clemson · L 13–17; defense 77.0 percentile2014 Week 9: Boston College at Wake Forest · W 23–17; defense 51.4 percentile2014 Week 10: Boston College at Virginia Tech · W 33–31; defense 52.1 percentile2014 Week 11: Boston College vs. Louisville · L 19–38; defense 27.2 percentile2014 Week 13: Boston College at Florida State · L 17–20; defense 57.2 percentile2014 Week 14: Boston College vs. Syracuse · W 28–7; defense 96.1 percentile2014 Week 1: Boston College vs. Penn State · L 30–31; defense 43.5 percentile2015 Week 1: Boston College vs. Maine · W 24–3; defense 86.5 percentile2015 Week 2: Boston College vs. Howard · W 76–0; defense 95.1 percentile2015 Week 3: Boston College vs. Florida State · L 0–14; defense 97.2 percentile2015 Week 4: Boston College vs. Northern Illinois · W 17–14; defense 98.0 percentile2015 Week 5: Boston College at Duke · L 7–9; defense 99.8 percentile2015 Week 6: Boston College vs. Wake Forest · L 0–3; defense 98.8 percentile2015 Week 7: Boston College at Clemson · L 17–34; defense 51.9 percentile2015 Week 8: Boston College at Louisville · L 14–17; defense 94.2 percentile2015 Week 9: Boston College vs. Virginia Tech · L 10–26; defense 92.4 percentile2015 Week 10: Boston College vs. NC State · L 8–24; defense 81.9 percentile2015 Week 12: Boston College vs. Notre Dame · L 16–19; defense 92.6 percentile2015 Week 13: Boston College at Syracuse · L 17–20; defense 83.1 percentile2016 Week 1: Boston College vs. Georgia Tech · L 14–17; defense 89.4 percentile2016 Week 2: Boston College at Massachusetts · W 26–7; defense 99.4 percentile2016 Week 3: Boston College at Virginia Tech · L 0–49; defense 17.5 percentile2016 Week 4: Boston College vs. Wagner · W 42–10; defense 75.3 percentile2016 Week 5: Boston College vs. Buffalo · W 35–3; defense 98.0 percentile2016 Week 6: Boston College vs. Clemson · L 10–56; defense 4.5 percentile2016 Week 8: Boston College vs. Syracuse · L 20–28; defense 23.1 percentile2016 Week 9: Boston College at NC State · W 21–14; defense 93.1 percentile2016 Week 10: Boston College vs. Louisville · L 7–52; defense 37.0 percentile2016 Week 11: Boston College at Florida State · L 7–45; defense 53.2 percentile2016 Week 12: Boston College vs. UConn · W 30–0; defense 96.8 percentile2016 Week 13: Boston College at Wake Forest · W 17–14; defense 61.9 percentile2016 Week 1: Boston College vs. Maryland · W 36–30; defense 66.4 percentile2017 Week 1: Boston College at Northern Illinois · W 23–20; defense 80.0 percentile2017 Week 2: Boston College vs. Wake Forest · L 10–34; defense 83.0 percentile2017 Week 3: Boston College vs. Notre Dame · L 20–49; defense 26.0 percentile2017 Week 4: Boston College at Clemson · L 7–34; defense 31.0 percentile2017 Week 5: Boston College vs. Central Michigan · W 28–8; defense 88.0 percentile2017 Week 6: Boston College vs. Virginia Tech · L 10–23; defense 65.8 percentile2017 Week 7: Boston College at Louisville · W 45–42; defense 36.4 percentile2017 Week 8: Boston College at Virginia · W 41–10; defense 54.5 percentile2017 Week 9: Boston College vs. Florida State · W 35–3; defense 94.3 percentile2017 Week 11: Boston College vs. NC State · L 14–17; defense 80.3 percentile2017 Week 12: Boston College vs. UConn · W 39–16; defense 90.0 percentile2017 Week 13: Boston College at Syracuse · W 42–14; defense 44.9 percentile2017 Week 1: Boston College vs. Iowa · L 20–27; defense 73.4 percentile2018 Week 1: Boston College vs. Massachusetts · W 55–21; defense 85.7 percentile2018 Week 2: Boston College vs. Holy Cross · W 62–14; defense 63.0 percentile2018 Week 3: Boston College at Wake Forest · W 41–34; defense 59.1 percentile2018 Week 4: Boston College at Purdue · L 13–30; defense 57.6 percentile2018 Week 5: Boston College vs. Temple · W 45–35; defense 30.1 percentile2018 Week 6: Boston College at NC State · L 23–28; defense 28.6 percentile2018 Week 7: Boston College vs. Louisville · W 38–20; defense 63.7 percentile2018 Week 9: Boston College vs. Miami · W 27–14; defense 62.2 percentile2018 Week 10: Boston College at Virginia Tech · W 31–21; defense 86.0 percentile2018 Week 11: Boston College vs. Clemson · L 7–27; defense 90.1 percentile2018 Week 12: Boston College at Florida State · L 21–22; defense 30.6 percentile2018 Week 13: Boston College vs. Syracuse · L 21–42; defense 30.7 percentile2019 Week 1: Boston College vs. Virginia Tech · W 35–28; defense 65.9 percentile2019 Week 2: Boston College vs. Richmond · W 45–13; defense 32.1 percentile2019 Week 3: Boston College vs. Kansas · L 24–48; defense 4.4 percentile2019 Week 4: Boston College at Rutgers · W 30–16; defense 49.4 percentile2019 Week 5: Boston College vs. Wake Forest · L 24–27; defense 44.1 percentile2019 Week 6: Boston College at Louisville · L 39–41; defense 26.1 percentile2019 Week 8: Boston College vs. NC State · W 45–24; defense 79.7 percentile2019 Week 9: Boston College at Clemson · L 7–59; defense 11.3 percentile2019 Week 10: Boston College at Syracuse · W 58–27; defense 52.0 percentile2019 Week 11: Boston College vs. Florida State · L 31–38; defense 14.1 percentile2019 Week 13: Boston College at Notre Dame · L 7–40; defense 48.6 percentile2019 Week 14: Boston College at Pittsburgh · W 26–19; defense 38.5 percentile2019 Week 1: Boston College vs. Cincinnati · L 6–38; defense 20.6 percentile2020 Week 4: Boston College vs. Texas State · W 24–21; defense 43.7 percentile2020 Week 5: Boston College vs. North Carolina · L 22–26; defense 49.2 percentile2020 Week 6: Boston College vs. Pittsburgh · W 31–30; defense 74.7 percentile2020 Week 7: Boston College at Virginia Tech · L 14–40; defense 12.4 percentile2020 Week 8: Boston College vs. Georgia Tech · W 48–27; defense 37.5 percentile2020 Week 9: Boston College at Clemson · L 28–34; defense 39.3 percentile2020 Week 10: Boston College at Syracuse · W 16–13; defense 64.6 percentile2020 Week 11: Boston College vs. Notre Dame · L 31–45; defense 4.6 percentile2020 Week 13: Boston College vs. Louisville · W 34–27; defense 19.7 percentile2020 Week 14: Boston College at Virginia · L 32–43; defense 13.9 percentile2021 Week 1: Boston College vs. Colgate · W 51–0; defense 66.3 percentile2021 Week 2: Boston College at Massachusetts · W 45–28; defense 50.6 percentile2021 Week 3: Boston College at Temple · W 28–3; defense 82.2 percentile2021 Week 4: Boston College vs. Missouri · W 41–34; defense 21.9 percentile2021 Week 5: Boston College at Clemson · L 13–19; defense 46.8 percentile2021 Week 7: Boston College vs. NC State · L 7–33; defense 27.9 percentile2021 Week 8: Boston College at Louisville · L 14–28; defense 54.5 percentile2021 Week 9: Boston College at Syracuse · L 6–21; defense 42.0 percentile2021 Week 10: Boston College vs. Virginia Tech · W 17–3; defense 82.6 percentile2021 Week 11: Boston College at Georgia Tech · W 41–30; defense 27.0 percentile2021 Week 12: Boston College vs. Florida State · L 23–26; defense 55.1 percentile2021 Week 13: Boston College vs. Wake Forest · L 10–41; defense 60.8 percentile2022 Week 1: Boston College vs. Rutgers · L 21–22; defense 23.3 percentile2022 Week 3: Boston College vs. Maine · W 38–17; defense 19.3 percentile2022 Week 4: Boston College at Florida State · L 14–44; defense 23.1 percentile2022 Week 5: Boston College vs. Louisville · W 34–33; defense 73.2 percentile2022 Week 6: Boston College vs. Clemson · L 3–31; defense 64.6 percentile2022 Week 8: Boston College at Wake Forest · L 15–43; defense 44.7 percentile2022 Week 10: Boston College vs. Duke · L 31–38; defense 39.5 percentile2022 Week 11: Boston College at NC State · W 21–20; defense 45.7 percentile2022 Week 12: Boston College at Notre Dame · L 0–44; defense 11.9 percentile2022 Week 13: Boston College vs. Syracuse · L 23–32; defense 18.2 percentile2023 Week 1: Boston College vs. Northern Illinois · L 24–27; defense 78.2 percentile2023 Week 2: Boston College vs. Holy Cross · W 31–28; defense 3.2 percentile2023 Week 3: Boston College vs. Florida State · L 29–31; defense 37.4 percentile2023 Week 4: Boston College at Louisville · L 28–56; defense 3.4 percentile2023 Week 5: Boston College vs. Virginia · W 27–24; defense 62.3 percentile2023 Week 6: Boston College at Army · W 27–24; defense 24.2 percentile2023 Week 8: Boston College at Georgia Tech · W 38–23; defense 56.3 percentile2023 Week 9: Boston College vs. UConn · W 21–14; defense 56.3 percentile2023 Week 10: Boston College at Syracuse · W 17–10; defense 62.8 percentile2023 Week 11: Boston College vs. Virginia Tech · L 22–48; defense 1.8 percentile2023 Week 12: Boston College at Pittsburgh · L 16–24; defense 15.8 percentile2023 Week 13: Boston College vs. Miami · L 20–45; defense 6.4 percentile2023 Week 1: Boston College vs. SMU · W 23–14; defense 88.3 percentile2024 Week 1: Boston College at Florida State · W 28–13; defense 50.0 percentile2024 Week 2: Boston College vs. Duquesne · W 56–0; defense 89.9 percentile2024 Week 3: Boston College at Missouri · L 21–27; defense 28.2 percentile2024 Week 4: Boston College vs. Michigan State · W 23–19; defense 48.8 percentile2024 Week 5: Boston College vs. Western Kentucky · W 21–20; defense 69.9 percentile2024 Week 6: Boston College at Virginia · L 14–24; defense 44.2 percentile2024 Week 8: Boston College at Virginia Tech · L 21–42; defense 13.5 percentile2024 Week 9: Boston College vs. Louisville · L 27–31; defense 56.4 percentile2024 Week 11: Boston College vs. Syracuse · W 37–31; defense 74.4 percentile2024 Week 12: Boston College at SMU · L 28–38; defense 32.7 percentile2024 Week 13: Boston College vs. North Carolina · W 41–21; defense 68.0 percentile2024 Week 14: Boston College vs. Pittsburgh · W 34–23; defense 64.7 percentile2024 Week 1: Boston College vs. Nebraska · L 15–20; defense 26.6 percentile2025 Week 1: Boston College vs. Fordham · W 66–10; defense 70.1 percentile2025 Week 2: Boston College at Michigan State · L 40–42; defense 37.0 percentile2025 Week 3: Boston College at Stanford · L 20–30; defense 14.8 percentile2025 Week 5: Boston College vs. California · L 24–28; defense 46.6 percentile2025 Week 6: Boston College at Pittsburgh · L 7–48; defense 19.5 percentile2025 Week 7: Boston College vs. Clemson · L 10–41; defense 3.7 percentile2025 Week 9: Boston College at Louisville · L 24–38; defense 20.0 percentile2025 Week 10: Boston College vs. Notre Dame · L 10–25; defense 59.3 percentile2025 Week 11: Boston College vs. SMU · L 13–45; defense 4.4 percentile2025 Week 12: Boston College vs. Georgia Tech · L 34–36; defense 7.0 percentile2025 Week 14: Boston College at Syracuse · W 34–12; defense 57.3 percentile2026 Week 1: Boston College at Cincinnati · L 15–34; defense 36.4 percentile2026 Week 2: Boston College vs. Rutgers · W 28–21; defense 47.3 percentile2014 defense season mean: 63.8 percentile2015 defense season mean: 93.6 percentile2016 defense season mean: 70.3 percentile2017 defense season mean: 68.4 percentile2018 defense season mean: 59.0 percentile2019 defense season mean: 34.7 percentile2020 defense season mean: 32.6 percentile2021 defense season mean: 51.9 percentile2022 defense season mean: 34.7 percentile2023 defense season mean: 31.1 percentile2024 defense season mean: 51.6 percentile2025 defense season mean: 25.7 percentile2026 defense Bayesian estimate: 28.6 percentile2026 defense empirical mean: 41.7 percentile2014201520162017201820192020202120222023202420252026
Individual gameSeason bar · 2026 is the estimate2026 empirical meanCoaching-era band
2020Jeff Hafley
2024Bill O'Brien

How to read 2026

The current-season estimate intelligently blends last season with new data.

The 2026 estimate is a Bayesian weighted average of normal-score Z-values. The 2025 season mean counts like 8 games of prior evidence; each completed 2026 game counts once. The result is then translated back to the 0–100 percentile scale.

2026 Z = (8 × 2025 mean Z + games played × 2026 mean Z) ÷ (8 + games played)

Season record

Every annual grade and coach

Retrospective rows average the available single-game grades in normal-score space. The result is shown as a percentile. Roughly speaking, a 95th-percentile season corresponds to about the eighth-best team in a 160-team field.

SeasonHead coachGamesOffenseDefense
2026Live estimateBill O'Brien2
35.7 estimate19.5 games-only average
28.6 estimate41.7 games-only average
2025Bill O'Brien1140.425.7
2024Bill O'BrienCoaching change1347.051.6
2023Jeff Hafley1359.431.1
2022Jeff Hafley1018.334.7
2021Jeff Hafley1229.451.9
2020Jeff HafleyCoaching change1047.932.6
2019Steve Addazio1353.334.7
2018Steve Addazio1232.459.0
2017Steve Addazio1339.868.4
2016Steve Addazio1312.870.3
2015Steve Addazio129.393.6
2014Steve Addazio1257.163.8