Task Enterprises presentsNFL Intelligence

2025 · Week 18 · Division

Final

Seahawks

Seattle

QB Sam Darnold

13·3

49ers

San Francisco

QB Brock Purdy

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

Closing spread

SEA -2.5

Total

47.5

Model margin

0.0est.

SF perspective

Push chance

None

half-point line — cannot push

Win probability

  • 49ers
  • Seahawks

How each play moved the game.

49ers winsSeahawks wins

Matchup

Where the edges are

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

Seahawksedge map49ers
  • +0.036EPA / play+0.091
  • 46.6%Success rate48.5%
  • +0.137EPA / dropback+0.175
  • -0.076EPA / rush-0.033
  • 10.7%Explosive rate8.2%
  • +4.54CPOE+5.72
  • 40.9%Third-down rate50.4%
  • 57.0%Red-zone TD rate65.6%
  • 2.22Points / drive2.48
  • 2.5%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

SEA lead 31–20 since 1999

SEA have won 2 straight. Meetings average 42.2 points. SF are 21-29-1 ATS in the series.

Previous meetings
SeasonMatchupScoreWinner
2025 · playoffsSF @ SEA641SEA
2025 · W1SF @ SEA1713SF
2024 · W11SEA @ SF2017SEA
2024 · W6SF @ SEA3624SF
2023 · W14SEA @ SF1628SF
2023 · W12SF @ SEA3113SF
2022 · playoffsSEA @ SF2341SF
2022 · W15SF @ SEA2113SF

Box score

Individual performances

Seahawks

Passing

PlayerC/AttYdsTDINT
Sam Darnold20/2619800

Rushing

PlayerCarYdsAvgTD
Kenneth Walker III16976.10
Zach Charbonnet17744.41
Sam Darnold691.50

49ers

Passing

PlayerC/AttYdsTDINT
Brock Purdy19/2712701

Rushing

PlayerCarYdsAvgTD
Christian McCaffrey8232.90
Brock Purdy22110.50
Brian Robinson294.50

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 -2.52.7%4.4%2.9%7.4%7.4%2.9%4.4%2.7%

Positive margins favour 49ers; negative favour Seahawks.

Half-point at risk

2.11%

outcomes that flip if the line moves 0.5

Model home win

49.1%

Expected total

44.5est.

Model

Where the number comes from

Each component is additive, in points of expected margin.

  • Team ratings (opponent-adjusted EPA)-1.71
  • Home-field advantage+1.71
  • Quarterback adjustment0.00
  • Rest differential0.00
  • Expected margin0.00