1999 · Week 4 · Division

Final

Chiefs

Kansas City

QB Elvis Grbac

14·21

Chargers

San Diego

QB Jim Harbaugh

Qualcomm Stadium · outdoors · grass · 76°F · wind 7mph

Closing spread

SD -1

Total

38.5

Model margin

+1.3est.

SD perspective

Push chance

2.2%est.

Win probability

  • Chargers
  • Chiefs

How each play moved the game.

Chargers winsChiefs wins

Matchup

Where the edges are

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

The rivalry

KC lead 31–23 since 1999

CHARGERS have won 2 straight. Meetings average 44.9 points. SD are 27-26-1 ATS in the series.

Previous meetings
SeasonMatchupScoreWinner
2025 · W15LAC @ KC1613CHARGERS
2025 · W1KC @ LAC2127CHARGERS
2024 · W14LAC @ KC1719KC
2024 · W4KC @ LAC1710KC
2023 · W18KC @ LAC1312KC
2023 · W7LAC @ KC1731KC
2022 · W11KC @ LAC3027KC
2022 · W2LAC @ KC2427KC

Box score

Individual performances

Chiefs

Passing

PlayerC/AttYdsTDINT
Elvis Grbac19/4020024

Rushing

PlayerCarYdsAvgTD
Rashaan Shehee22863.90
Elvis Grbac111.00
Derrick Alexander100.00

Receiving

PlayerRecTgtYdsTD
Tony Gonzalez710681
Joe Horn23411
Kevin Lockett45330
Andre Rison24250
Derrick Alexander18140
Rashaan Shehee12130
Lonnie Johnson0300

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 +14.2%2.8%7.2%7.5%3.0%4.6%2.9%

Positive margins favour Chargers; negative favour Chiefs.

Half-point at risk

2.16%

outcomes that flip if the line moves 0.5

Model home win

52.5%

Expected total

43.5est.

Model

Where the number comes from

Each component is additive, in points of expected margin.

  • Team ratings (opponent-adjusted EPA)-1.29
  • Home-field advantage+2.56
  • Quarterback adjustment0.00
  • Rest differential0.00
  • Expected margin+1.27

One or both ratings are carry-over priors — no games have been played this season yet, so treat this as a starting assumption rather than a read.