Task Enterprises presentsNFL Intelligence

2018 · Week 4

Final

49ers

San Francisco

QB C.J. Beathard

27·29

Chargers

Los Angeles

QB Philip Rivers

StubHub Center · outdoors · grass · 78°F · wind 9mph

Closing spread

LAC -10

Total

46

Model margin

+8.6est.

LAC perspective

Push chance

3.5%est.

the line sits on a key number

Win probability

  • Chargers
  • 49ers

How each play moved the game.

Chargers 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 mapChargers
  • -0.019EPA / play+0.126
  • 44.8%Success rate47.0%
  • +0.054EPA / dropback+0.211
  • -0.135EPA / rush+0.001
  • 11.4%Explosive rate12.5%
  • -2.68CPOE+3.54
  • 37.2%Third-down rate39.7%
  • 54.2%Red-zone TD rate70.7%
  • 1.66Points / drive2.31
  • 2.9%Turnover rate1.8%

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

LAC lead 5–2 since 1999

Meetings average 53.4 points. LAC are 5-2 ATS in the series.

Previous meetings
SeasonMatchupScoreWinner
2022 · W10LAC @ SF1622SF
2014 · W16SD @ SF3835CHARGERS
2010 · W15SF @ SD734CHARGERS
2006 · W6SD @ SF4819CHARGERS
2002 · W11SF @ SD1720CHARGERS
2000 · W14SF @ SD4517SF

Box score

Individual performances

49ers

Passing

PlayerC/AttYdsTDINT
C.J. Beathard23/3729822

Rushing

PlayerCarYdsAvgTD
Matt Breida9394.30
C.J. Beathard7192.70
Alfred Morris4143.50
Marquise Goodwin144.00

Chargers

Passing

PlayerC/AttYdsTDINT
Philip Rivers25/3925031

Rushing

PlayerCarYdsAvgTD
Melvin Gordon151046.90
Austin Ekeler8253.10
Philip Rivers4-3-0.80

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 +105.4%7.0%3.2%5.0%3.5%3.4%2.8%

Positive margins favour Chargers; negative favour 49ers.

Half-point at risk

3.45%

outcomes that flip if the line moves 0.5

Model home win

71.3%

Expected total

45.5est.

Model

Where the number comes from

Each component is additive, in points of expected margin.

  • Team ratings (opponent-adjusted EPA)+3.02
  • Home-field advantage+1.74
  • Quarterback adjustment+3.86
  • Rest differential0.00
  • Expected margin+8.63