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NFL · Fixtures & Results

Los Angeles Chargers at Seattle Seahawks

NFL 2026 · Week 4 · · Lumen Field

Los Angeles Chargers at Seattle Seahawks, Week 4 of the 2026 season: Seattle Seahawks won 30–23.

Prediction made · Elo model

Result

Los Angeles Chargers 23–30 Seattle Seahawks

Closing line SEA −7, total 42.5 (went over). The spread was a push.

What the model predicted beforehand

The model gave Seattle Seahawks a 80.8% chance of winning and Los Angeles Chargers 19.3%, with a predicted margin of SEA by 10.0. The betting market had it SEA 75%. The model’s favourite won.

OutcomeThis modelBetting market
Seattle Seahawks win80.8%75.1%
Los Angeles Chargers win19.3%24.9%
MarginSEA by 10.0SEA −7
Total points–42.5

The model is a margin-based Elo rating walked forward over every game since 2002, with home advantage; ties are rare enough not to be priced. Betting market: the moneyline with the bookmaker’s margin removed, and the spread as quoted (favourite first).

How it might finish: winning margin
Chance of each winning margin
Los Angeles Chargers by 15+3%
Los Angeles Chargers by 8–145%
Los Angeles Chargers by 4–77%
Los Angeles Chargers by 1–38%
Tie<1%
Seattle Seahawks by 1–311%
Seattle Seahawks by 4–714%
Seattle Seahawks by 8–1417%
Seattle Seahawks by 15+34%

Most likely exact margins: SEA by 3 (7.5%), SEA by 7 (5.6%) and LAC by 3 (5.3%). NFL scores come in 3s and 7s, so margins of 3, 7, 10 and 14 come up far more often than their neighbours.

On this curve Seattle Seahawks were 51.5% to cover the line (SEA −7): to win by more than 7.

The curve is a normal spread of results around the model’s expected margin (Stern, 1991), reweighted for the NFL’s key numbers. Its shape was fitted on 2002–2023 and checked on 2024, where it beat a plain bell curve. Because it is built from the expected margin alone, its win chances can differ by a few points from the Elo figure above, which is the one the Model Lab scores.