Los Angeles Chargers vs Buffalo Bills
Sunday, September 27, 2026 · Highmark Stadium, Orchard Park, NY
Quick Answer
As of August 1, 2026, our model favors the Bills by 7 in Los Angeles Chargers vs Buffalo Bills, NFL Week 3 2026 — 70% to win, and the 2nd-widest model gap in Week 3. Kalshi has not listed KXNFLGAME-26SEP27LACBUF yet, so there is no price to compare: when it opens, Bills at 65c or below (or Chargers at 25c or below) is where the model would take a position.
LAC
-0.4
BUF
+4.2
Chargers
30%
model win prob
Bills
70%
model win prob
KXNFLGAME-26SEP27LACBUFhasn't opened yet, so there is no price to compare. When it does, the model buys the Bills at 65c or below, or the Chargers at 25c or below — a five-point threshold either way. The market column fills in automatically.
Power-rating comparison
Why the model has the Bills by 7
The model does not think this one is close. The Bills rate 4th of 32 at +4.2, the Chargers 17th at -0.4, and once home field is applied the line lands on the Bills by 7 — 70% to win. That is the 2nd-widest gap among the 16 games on the Week 3 board. A preseason rating spread this size is not a promise: it says nothing about turnovers, health, or a defense that shows up different than last year. What it does say is that the Chargers need the price to be wrong, not the matchup.
The sharpest unit gap in the game runs one way: the Bills offense grades +4.0 (2nd of 32) against a Chargers defense at -0.1 (10th) — 4.1 points of separation on our scale, and the single biggest reason the line sits where it does. Going the other direction, the Chargers offense (-0.7, 22nd) meets the Bills defense (-0.2, 11th), a 0.4-point gap.
Zoom out to the full season and the model projects the Bills at 10.3 wins (favored in 13 of 17) and the Chargers at 8.2 (favored in 9) — 2.1 wins apart across the year. By win probability this is the 13th-hardest game on the Bills' schedule and the 3rd-hardest on the Chargers'.
On the calendar, the Chargers are on 7 days and the Bills are on 10 days. The Chargers come in off the Raiders, the Bills off the Lions. None of that is in the model line — our rating model prices teams and home field, nothing else — so rest and travel are yours to weigh on top of the number, not inside it.
Recent history, for context only: 10 regular-season meetings since 2002, 6-4 in the Chargers' favour, plus 1 playoff game. They last met in 2023: Bills won 24-22 in December. Over their last 4 meetings the Bills are 2-2. It is not an input to the line — rosters turn over faster than series records do.
Does the model earn this number? In 448 of the 3266 walk-forward games it has been graded on (2013-2024, no market line used), it landed in the 65-70% range. Those favourites went 68%. The 70% on the Bills here sits in that same band, and the history backs it.
Kalshi has not listed KXNFLGAME-26SEP27LACBUF, so there is no price on the board and no edge to quote. The model's number to hold it to: Bills 70%, Chargers 30%. Applying our five-point threshold, that makes Bills contracts a buy at 65c or below and Chargers contracts a buy at 25c or below — anything between is inside the noise, and we pass. Week 1's KXNFLGAME contracts opened in May 2026 and the rest of the slate lists as the season gets closer; this page picks up the price automatically when it does.
Prediction markets are not sportsbooks — you trade a contract that settles at $1 or $0, not a wager against a house line. Informational only; trade responsibly.
Chargers vs Bills — frequently asked
Who is favored in Chargers vs Bills in Week 3?
Our power-rating model favors the Bills by 7 points, a 70% win probability over the Chargers. The Bills rate 4th of 32 (+4.2) and the Chargers 17th (-0.4); Kalshi has not listed KXNFLGAME-26SEP27LACBUF yet, so the model line is the only number on the board.
What would it take for the Chargers to win?
The 7-point line comes from a 4.6-point rating gap, and a single-game margin has roughly a 13.5-point standard deviation around it — which is why the Chargers still project at 30% rather than zero. Their best structural path is the Chargers defense (-0.1, 10th of 32) holding up. Ratings do not price injuries or turnover luck, which is where most upsets actually come from.
How do you take a position on Chargers vs Bills?
The contract will be KXNFLGAME-26SEP27LACBUF on Kalshi, a CFTC-regulated exchange open to traders in all 50 states. It has not opened yet; when it does, the model would take the Bills at 65c or below, or the Chargers at 25c or below. There is no point spread — you buy a yes or no contract on a team and it settles at $1 or $0.
When and where do the Bills host the Chargers?
Los Angeles Chargers visit the Buffalo Bills on Sunday, September 27, 2026 — a Sunday game in NFL Week 3, at Highmark Stadium, Orchard Park, NY.
What does the model project for the Bills and Chargers this season?
Across all 17 games the model projects the Bills at 10.3 wins (favored in 13) and the Chargers at 8.2 (favored in 9). This game ranks 13th-hardest on the Bills' schedule and 3rd-hardest on the Chargers', by model win probability.
How often does the model win when it is 70% on a team like the Bills?
68% of the time. Over 3266 walk-forward games from 2013-2024 — trained only on prior seasons, no market line as an input — the model put a team in the 65-70% range 448 times, and those teams won 68% of them. The Bills at 70% over the Chargers sit in that band, off a 7-point model line. Straight-up across all 3266 graded games the model picked winners at 59.6%, with a Brier score of 0.236 against 0.25 for a coin flip.
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