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San Francisco 49ers

HC Kyle Shanahan
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Buffalo Bills

HC Sean McDermott
Sunday 2024-12-01 · 20:20 New Era Field, Orchard Park US 🌨 Snow Spread 6.5 O/U 45.0

Win Probability

SF
31.7%
BUF
68.3%
🌨 Snow

Confidence: <strong>clear edge</strong> Bands are honesty-checked against held-out seasons, not a feeling about this game — see the <a href="/track-record">full track record</a>.

Key Insights

  • BUF offense: +0.119 EPA/play over its last 8 games (5th in the league)
  • BUF on 7 more days rest than SF
  • SF offense: +0.020 EPA/play over its last 8 games (15th in the league)
  • QB edge to BUF: Josh Allen (BUF) +0.206 vs Brock Purdy (SF) +0.166 EPA/dropback (SF starting Brock Purdy in place of Brandon Allen)

Predicted Final Score

SF 22
BUF 27
Projected margin: BUF by 5 Projected total: 49

Typical error on unseen games: ±10.2 pts on margin, ±10.7 pts on total (held-out 2025). Treat this as a range, not a prediction to the point — see the <a href="/track-record">full track record</a>.

Injury Report — Week 13

SF

Aaron Banks G Out Concussion
Nick Bosa DE Out Hip
Jordan Elliott DT Out Concussion
Deommodore Lenoir CB Out Knee
Trent Williams T Out Ankle
Dre Greenlaw LB Out Achilles
Brock Purdy QB Questionable Right Shoulder
Chris Conley WR Questionable Knee
Demetrius Flannigan-Fowles LB Questionable Knee
Kevin Givens DT Questionable Groin
Renardo Green CB Questionable Neck

BUF

Dalton Kincaid TE Out Knee
Tylan Grable T Out Groin
DeWayne Carter DT Questionable Wrist
Matt Milano LB Questionable Biceps
Keon Coleman WR Questionable Wrist

Pulled fresh for 2024 week 13 specifically, not a cached snapshot — this changes every week as new reports come in.

Actual Result

SF 10
BUF 35

Prediction missed by 20 pts on margin, 4 pts on total.

Scoring Summary

  • Q1 07:44 FG SF (7:44) 4-J.Moody 33 yard field goal is GOOD, Center-46-T.Pepper, Holder-40-P.O'Donnell. SF 3 – BUF 0
  • Q1 00:08 TD BUF (:08) 70-A.Anderson reported in as eligible. 22-R.Davis right end for 5 yards, TOUCHDOWN. SF 3 – BUF 6
  • Q2 08:48 TD BUF (8:48) 70-A.Anderson reported in as eligible. 4-J.Cook right tackle for 65 yards, TOUCHDOWN. SF 3 – BUF 13
  • Q2 00:47 TD BUF (:47) (Shotgun) 17-J.Allen pass short right to 13-M.Hollins for 7 yards, TOUCHDOWN. SF 3 – BUF 20
  • Q3 06:05 TD BUF (6:05) 70-A.Anderson reported in as eligible. 17-J.Allen pass short left to 18-A.Cooper to SF 9 for -2 yards. Lateral to 17-J.Allen for 9 yards, TOUCHDOWN. SF 3 – BUF 27
  • Q3 03:00 TD SF (3:00) (Shotgun) 31-I.Guerendo left end for 15 yards, TOUCHDOWN. SF 9 – BUF 28
  • Q4 12:39 TD BUF (12:39) (Shotgun) 17-J.Allen scrambles right tackle for 8 yards, TOUCHDOWN. SF 10 – BUF 34

Fourth-Down Decisions

  • Q1 BUF 4th & 4 at the 72
    Chose PUNT ✓ matched the model
    p(convert) 53%

    (12:31) 8-S.Martin punts 48 yards to SF 24, Center-69-R.Ferguson. 19-J.Cowing to SF 37 for 13 yards (42-Do.Williams).

  • Q1 SF 4th & 7 at the 15
    Chose KICK ✓ matched the model
    p(convert) 35% p(FG) 95%

    (7:44) 4-J.Moody 33 yard field goal is GOOD, Center-46-T.Pepper, Holder-40-P.O'Donnell.

  • Q2 SF 4th & 8 at the 27
    Chose KICK ✓ matched the model
    p(convert) 34% p(FG) 82%

    (8:52) 4-J.Moody 45 yard field goal is No Good, Wide Left, Center-46-T.Pepper, Holder-40-P.O'Donnell.

  • Q2 SF 4th & 14 at the 41
    Chose PUNT ✓ matched the model
    p(convert) 28% p(FG) 50%

    (3:43) 40-P.O'Donnell punts 38 yards to BUF 3, Center-46-T.Pepper, downed by SF-30-G.Odum.

  • Q3 BUF 4th & 2 at the 44
    Chose PUNT Model wanted GO instead — cost +1.15 EP
    p(convert) 61% p(FG) 42%

    (10:20) 8-S.Martin punts 38 yards to SF 6, Center-69-R.Ferguson, downed by BUF-89-J.Virgil.

  • Q3 SF 4th & 10 at the 94
    Chose PUNT ✓ matched the model
    p(convert) 39%

    (9:15) 40-P.O'Donnell punts 46 yards to BUF 48, Center-46-T.Pepper. 29-B.Codrington to SF 44 for 8 yards (18-C.Conley).

  • Q3 BUF 4th & 2 at the 25
    Chose GO ✓ matched the model
    p(convert) 58% p(FG) 85%

    (6:50) (Shotgun) 17-J.Allen pass short left to 10-K.Shakir pushed ob at SF 7 for 18 yards (53-D.Winters).

  • Q3 SF 4th & 5 at the 43
    Chose GO ✓ matched the model
    p(convert) 44% p(FG) 44%

    (4:22) (Shotgun) 13-B.Purdy pass short right to 15-J.Jennings to BUF 17 for 26 yards (7-Ta.Johnson, 43-T.Bernard).

  • Q3 BUF 4th & 2 at the 65
    Chose PUNT Model wanted GO instead — cost +0.61 EP
    p(convert) 63%

    (:40) 8-S.Martin punts 54 yards to SF 11, Center-69-R.Ferguson. 19-J.Cowing pushed ob at SF 23 for 12 yards (39-C.Lewis).

  • Q4 BUF 4th & 9 at the 30
    Chose KICK ✓ matched the model
    p(convert) 34% p(FG) 77%

    (9:39) 2-T.Bass 49 yard field goal is No Good, Wide Left, Center-69-R.Ferguson, Holder-8-S.Martin.

  • Q4 SF 4th & 14 at the 65
    Chose PUNT ✓ matched the model
    p(convert) 30%

    (8:12) 40-P.O'Donnell punts 40 yards to BUF 25, Center-46-T.Pepper. 29-B.Codrington for 75 yards, TOUCHDOWN NULLIFIED by Penalty. PENALTY on BUF-24-C.Bishop, Offensive Holding, 10 yards, enforced at BUF 35.