Week 15 predictions

San Francisco 49ers at Los Angeles Chargers

Game data updated 11 min ago · this page re-reads every 10 min while open

Week 15, 2026 · Friday, Dec 18, 1:15 AM · dome

San Francisco 49ers
1–0 · Elo 1584 · Brock Purdy
Elo: SF 55%Spread: LAC 57%
Los Angeles Chargers
0–1 · Elo 1481 · Justin Herbert (+18) · Home

What the forecasters say

ForecasterFavorsLACSFNote
EloSF 55%45%55%LAC 1481 vs SF 1584, implied spread LAC +1.4
Closing spreadLAC 57%57%43%LAC -2.5
The blendLAC 54%54%46%

The System's number and our picks of the week are for signed-in players. Sign in, it's free.

The spot: Big disagreement

Elo and the market are 10 or more points apart. Over 24 seasons (943 games) Elo's side won 50% while Elo claimed 63% and the market 49%. The market was right almost every time. Take the market's number, or split the difference at most. This is where Elo is overconfident.

Los Angeles Chargers over the 49ers: Elo 45%, market 57%. Big disagreement: trust the market number. Herbert is worth 18 Elo.

Details

Line movement

No market has priced this game yet. Kalshi and Polymarket usually list games about a week out; sportsbooks earlier.