2018 · Week 8 · Division

Final

49ers

San Francisco

QB C.J. Beathard

15·18

Cardinals

Arizona

QB Josh Rosen

State Farm Stadium · closed · grass

Closing spread

SF -2.5

Total

40

Model margin

+3.9est.

ARI perspective

Push chance

None

half-point line — cannot push

Win probability

  • Cardinals
  • 49ers

How each play moved the game.

Cardinals wins49ers wins

Matchup

Where the edges are

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

49ersedge mapCardinals
  • -0.019EPA / play-0.240
  • 44.8%Success rate35.6%
  • +0.054EPA / dropback-0.267
  • -0.135EPA / rush-0.193
  • 11.4%Explosive rate6.0%
  • -2.68CPOE-7.13
  • 37.2%Third-down rate29.0%
  • 54.2%Red-zone TD rate63.9%
  • 1.66Points / drive0.92
  • 2.9%Turnover rate3.0%

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. ARI are 23-26-1 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

49ers

Passing

PlayerC/AttYdsTDINT
C.J. Beathard14/2819010

Rushing

PlayerCarYdsAvgTD
Matt Breida16422.60
Alfred Morris6284.70
Raheem Mostert2189.00
C.J. Beathard591.80

Cardinals

Passing

PlayerC/AttYdsTDINT
Josh Rosen23/4025221

Rushing

PlayerCarYdsAvgTD
David Johnson16593.70
Josh Rosen2126.00
Chase Edmonds294.50
J.J. Nelson188.00

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 -2.53.7%6.7%7.5%3.2%4.9%3.2%

Positive margins favour Cardinals; negative favour 49ers.

Half-point at risk

1.96%

outcomes that flip if the line moves 0.5

Model home win

59.4%

Expected total

43.5est.

Model

Where the number comes from

Each component is additive, in points of expected margin.

  • Team ratings (opponent-adjusted EPA)-1.99
  • Home-field advantage+1.74
  • Quarterback adjustment+3.86
  • Rest differential+0.24
  • Expected margin+3.85