2021 · Week 9 · Division

Final

Cardinals

Arizona

QB Colt McCoy

31·17

49ers

San Francisco

QB Jimmy Garoppolo

Levi's Stadium · outdoors · grass · 57°F · wind 8mph

Closing spread

SF -5.5

Total

44.5

Model margin

+2.5est.

SF perspective

Push chance

None

half-point line — cannot push

Win probability

  • 49ers
  • Cardinals

How each play moved the game.

49ers winsCardinals wins

Matchup

Where the edges are

Season-long league percentiles for both sides, mirrored. The saturated side of a lopsided row holds the edge.

Cardinalsedge map49ers
  • +0.079EPA / play+0.085
  • 46.8%Success rate45.5%
  • +0.154EPA / dropback+0.174
  • -0.037EPA / rush-0.024
  • 9.4%Explosive rate10.9%
  • +4.19CPOE+1.73
  • 45.2%Third-down rate40.6%
  • 62.3%Red-zone TD rate74.8%
  • 2.37Points / drive2.30
  • 1.2%Turnover rate2.0%

Bar length is league percentile, already oriented so longer is better. The saturated side of a lopsided row holds the edge; rows within ~12 points are washed as even.

The rivalry

SF lead 28–22 since 1999

SF have won 2 straight. Meetings average 44.8 points. SF are 26-23-1 ATS in the series.

Previous meetings
SeasonMatchupScoreWinner
2025 · W11SF @ ARI4122SF
2025 · W3ARI @ SF1516SF
2024 · W18SF @ ARI2447ARI
2024 · W5ARI @ SF2423ARI
2023 · W15SF @ ARI4529SF
2023 · W4ARI @ SF1635SF
2022 · W18ARI @ SF1338SF
2022 · W11SF @ ARI3810SF

Box score

Individual performances

Cardinals

Passing

PlayerC/AttYdsTDINT
Colt McCoy22/2624910
Christian Kirk1/13300

Rushing

PlayerCarYdsAvgTD
James Conner21964.62
Eno Benjamin9394.31
Colt McCoy7233.30
Chase Edmonds133.00
Chris Streveler122.00

Receiving

PlayerRecTgtYdsTD
Christian Kirk66910
James Conner55771
Antoine Wesley33620
Zach Ertz35270
Rondale Moore55250
Darrell Daniels1200

49ers

Passing

PlayerC/AttYdsTDINT
Jimmy Garoppolo28/4032621

Rushing

PlayerCarYdsAvgTD
Elijah Mitchell8364.50
Jimmy Garoppolo133.00
JaMycal Hasty122.00
Brandon Aiyuk1-2-2.00

Receiving

PlayerRecTgtYdsTD
George Kittle681011
Brandon Aiyuk68891
Deebo Samuel Sr.59630
Elijah Mitchell55430
JaMycal Hasty34110
Mohamed Sanu1350

Where this game is likely to land

  • Model
  • Smooth (normal)
  • Betting line

Probability of each final margin. Football scoring clusters — the spikes at 3 and 7 are real, and a smooth model misses them.

line +5.54.0%2.7%7.0%7.5%3.1%4.7%3.0%2.6%

Positive margins favour 49ers; negative favour Cardinals.

Half-point at risk

3.10%

outcomes that flip if the line moves 0.5

Model home win

55.8%

Expected total

44.5est.

Model

Where the number comes from

Each component is additive, in points of expected margin.

  • Team ratings (opponent-adjusted EPA)+1.01
  • Home-field advantage+1.71
  • Quarterback adjustment+0.02
  • Rest differential-0.24
  • Expected margin+2.50