Win Probability
Confidence: <strong>strong 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
- CHI offense: -0.122 EPA/play over its last 8 games (30th in the league)
- QB edge to PIT: Ben Roethlisberger (PIT) -0.013 vs Justin Fields (CHI) -0.279 EPA/dropback
- CHI defense: +0.085 EPA/play allowed over its last 8 games (25th in the league)
Predicted Final Score
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 9
CHI
PIT
Pulled fresh for 2021 week 9 specifically, not a cached snapshot — this changes every week as new reports come in.
Actual Result
Prediction missed by 5 pts on margin, 13 pts on total.
Scoring Summary
- Q1 09:46 TD PIT (9:46) 22-N.Harris left guard for 10 yards, TOUCHDOWN. CHI 0 – PIT 6
- Q2 13:28 TD PIT (13:28) (Shotgun) 7-B.Roethlisberger pass short left to 88-P.Freiermuth for 4 yards, TOUCHDOWN. CHI 0 – PIT 13
- Q2 00:19 FG CHI (:19) 2-C.Santos 30 yard field goal is GOOD, Center-48-P.Scales, Holder-16-P.O'Donnell. CHI 3 – PIT 14
- Q3 07:48 FG CHI (7:48) 2-C.Santos 22 yard field goal is GOOD, Center-48-P.Scales, Holder-16-P.O'Donnell. CHI 6 – PIT 14
- Q3 02:14 TD PIT (2:14) (Shotgun) 7-B.Roethlisberger pass short right to 88-P.Freiermuth for 10 yards, TOUCHDOWN. Penalty on CHI-22-K.Vildor, Defensive Pass Interference, declined. CHI 6 – PIT 20
- Q4 14:23 TD CHI (14:23) (Shotgun) Direct snap to 32-D.Montgomery. 11-D.Mooney left end for 15 yards, TOUCHDOWN. CHI 12 – PIT 20
- Q4 11:59 FG PIT (11:59) 9-C.Boswell 54 yard field goal is GOOD, Center-46-C.Kuntz, Holder-6-P.Harvin. CHI 13 – PIT 23
- Q4 06:47 TD CHI (6:47) 16-P.O'Donnell punts 57 yards to PIT 20, Center-48-P.Scales. 14-R.McCloud to PIT 29 for 9 yards (45-J.Iyiegbuniwe). FUMBLES (45-J.Iyiegbuniwe), RECOVERED by CHI-36-D.Houston-Carson at PIT 25. 36-D.Houston-Carson for 25 yards, TOUCHDOWN. CHI 19 – PIT 23
- Q4 02:56 FG PIT (2:56) 9-C.Boswell 52 yard field goal is GOOD, Center-46-C.Kuntz, Holder-6-P.Harvin. CHI 20 – PIT 26
- Q4 01:52 TD CHI (1:52) (Shotgun) 1-J.Fields pass deep left to 11-D.Mooney for 16 yards, TOUCHDOWN. CHI 26 – PIT 26
- Q4 00:30 FG PIT (:30) 9-C.Boswell 40 yard field goal is GOOD, Center-46-C.Kuntz, Holder-6-P.Harvin. CHI 27 – PIT 29
Fourth-Down Decisions
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Q1 CHI 4th & 2 at the 70Chose PUNT Model wanted GO instead — cost +0.69 EPp(convert) 60%
(13:13) 16-P.O'Donnell punts 43 yards to PIT 27, Center-48-P.Scales. 14-R.McCloud pushed ob at PIT 41 for 14 yards (35-R.Nall).
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Q1 CHI 4th & 6 at the 85Chose PUNT ✓ matched the modelp(convert) 43%
(7:51) 16-P.O'Donnell punts 49 yards to PIT 36, Center-48-P.Scales. 14-R.McCloud to PIT 42 for 6 yards (20-D.Shelley).
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Q1 PIT 4th & 13 at the 50Chose PUNT ✓ matched the modelp(convert) 30% p(FG) 28%
(4:36) 6-P.Harvin punts 38 yards to CHI 12, Center-46-C.Kuntz, fair catch by 17-J.Grant.
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Q1 PIT 4th & 1 at the 27Chose GO ✓ matched the modelp(convert) 68% p(FG) 82%
(:13) 22-N.Harris left guard to CHI 25 for 2 yards (6-D.Trevathan; 58-R.Smith).
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Q2 CHI 4th & 3 at the 68Chose PUNT ✓ matched the modelp(convert) 53%
(12:04) 16-P.O'Donnell punts 54 yards to PIT 14, Center-48-P.Scales. 14-R.McCloud to PIT 17 for 3 yards (36-D.Houston-Carson).
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Q2 PIT 4th & 7 at the 80Chose PUNT ✓ matched the modelp(convert) 43%
(9:19) 6-P.Harvin punts 32 yards to CHI 48, Center-46-C.Kuntz, out of bounds.
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Q2 PIT 4th & 1 at the 82Chose PUNT Model wanted GO instead — cost +0.99 EPp(convert) 74%
(5:00) 6-P.Harvin punts 46 yards to CHI 36, Center-46-C.Kuntz, out of bounds.
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Q2 CHI 4th & 12 at the 12Chose KICK ✓ matched the modelp(convert) 24% p(FG) 96%
(:19) 2-C.Santos 30 yard field goal is GOOD, Center-48-P.Scales, Holder-16-P.O'Donnell.
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Q3 PIT 4th & 3 at the 48Chose PUNT Model wanted GO instead — cost +0.71 EPp(convert) 53% p(FG) 33%
(12:50) 6-P.Harvin punts 41 yards to CHI 7, Center-46-C.Kuntz, downed by PIT-41-R.Spillane.
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Q3 CHI 4th & 4 at the 4Chose KICK Model wanted GO instead — cost +0.50 EPp(convert) 40% p(FG) 98%
(7:48) 2-C.Santos 22 yard field goal is GOOD, Center-48-P.Scales, Holder-16-P.O'Donnell.
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Q3 PIT 4th & 1 at the 24Chose GO ✓ matched the modelp(convert) 68% p(FG) 86%
(4:38) 22-N.Harris up the middle to CHI 23 for 1 yard (58-R.Smith; 59-C.Marsh).
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Q4 PIT 4th & 1 at the 36Chose KICK Model wanted GO instead — cost +1.85 EPp(convert) 69% p(FG) 64%
(11:59) 9-C.Boswell 54 yard field goal is GOOD, Center-46-C.Kuntz, Holder-6-P.Harvin.
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Q4 PIT 4th & 18 at the 39Chose PUNT Model wanted KICK instead — cost +0.46 EPp(convert) 24% p(FG) 56%
(8:06) 6-P.Harvin punts 39 yards to end zone, Center-46-C.Kuntz, Touchback.
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Q4 CHI 4th & 7 at the 77Chose PUNT ✓ matched the modelp(convert) 40%
(6:47) 16-P.O'Donnell punts 57 yards to PIT 20, Center-48-P.Scales. 14-R.McCloud to PIT 29 for 9 yards (45-J.Iyiegbuniwe). FUMBLES (45-J.Iyiegbuniwe), RECOVERED by CHI-36-D.Houston-Carson at PIT 25. 36-D.Houston-Carson for 25 yards, TOUCHDOWN.
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Q4 PIT 4th & 5 at the 34 late-gameChose KICK ✓ matched the modelp(convert) 42% p(FG) 69%
(2:56) 9-C.Boswell 52 yard field goal is GOOD, Center-46-C.Kuntz, Holder-6-P.Harvin.
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Q4 PIT 4th & 1 at the 23 late-gameChose KICK ✓ matched the modelp(convert) 68% p(FG) 88%
(:30) 9-C.Boswell 40 yard field goal is GOOD, Center-46-C.Kuntz, Holder-6-P.Harvin.