Patriots vs. Bills Prediction Markets: Buffalo a Heavy Favorite as Polymarket and Sportsbooks Agree

Buffalo’s perfect start to the season is about to face its biggest spotlight test yet. The Bills (4-0) host the New England Patriots (2-2) on Sunday Night Football at Highmark Stadium, and prediction markets are treating this one less like a coin flip and more like a formality — at least on paper.

What the Markets Are Saying

Polymarket’s moneyline contract for this game has Buffalo’s win probability sitting at roughly 73.5%, with New England priced at just 26.5%. That’s not far off from where the sportsbooks have it either: Bills moneyline prices range from around -305 to -425 depending on the book, with the Patriots sitting anywhere from +245 to +325. The spread tells a similar story, with Buffalo favored by 7 to 7.5 points and the total set between 49.5 and 50.5 — a number that’s drawn a near 50/50 split on the over/under among bettors. Live NFL odds continue to shift slightly throughout the week, but the direction has been consistent: money keeps flowing toward Buffalo.

When a prediction market and the traditional sportsbook line are telling you the same thing this clearly, it’s usually because the public information supporting that lean is substantial — and in this case, it is.

Why Buffalo Is the Heavy Favorite

The Bills are 4-0 for the first time this season and widely considered to have one of the healthiest rosters in the league heading into Week 5. They’re at home, riding momentum, and facing a Patriots defense that’s dealing with a significant injury list. Buffalo’s skill-position questions are minor by comparison — Keon Coleman (ankle) and Ray Davis (hamstring) are questionable, and defensive tackle T.J. Sanders is doubtful with an illness, but none of that threatens to meaningfully change Buffalo’s game plan.

New England, on the other hand, is missing several key defensive pieces. Cornerback Christian Gonzalez and defensive tackle Christian Barmore are both out, along with safety Brenden Schooler and cornerback Channing Canada, who was downgraded to out on Saturday. That’s a lot of beef and coverage ability to lose against a Bills offense that thrives on both the ground game and quick, decisive passing.

The Patriots’ Path to an Upset

New England enters off a rough 35-6 loss at Jacksonville, a game that followed a much better showing in a 20-3 win over Pittsburgh the week before. The offense has been inconsistent, averaging around 12 points per game through its first three weeks before the Jacksonville blowout pushed that number further in the wrong direction. Quarterback Drake Maye carries no injury designation and has been a full participant all week, which at least means New England’s offense should have its starter operating at full health, even if the supporting cast around him remains shaky.

For the Patriots to have a real shot, Maye needs time to operate and the offense needs to sustain drives against a Bills defense playing at home with confidence. It’s not an impossible path, but it does require New England’s banged-up defense to somehow slow down Buffalo’s attack long enough to keep this one within reach — a tall order against a team that hasn’t lost yet this season.

What to Watch For

Buffalo’s offense, led by MVP-caliber quarterback Josh Allen, figures to lean on exactly the kind of matchup advantages that come with facing a shorthanded secondary. If the Patriots can’t get consistent pressure or coverage without Gonzalez and Barmore, this game could get out of hand early — which is part of why the total sits just above 50 points despite New England’s offensive struggles. A game script where Buffalo builds an early lead often opens things up for more scoring on both sides as the Patriots are forced to throw to keep pace.

Bettors looking to get in on this one should check the latest NFL odds before kickoff, since lines can continue to move right up until Sunday night.

Prediction Markets Verdict

With both Polymarket and sportsbook pricing aligned this closely, the signal is hard to ignore. Buffalo’s health advantage, home-field spot, and unbeaten record all point toward a favorable outcome for the Bills, while New England’s defensive injuries represent exactly the kind of exploitable weakness that undefeated teams look to take advantage of on prime time.

The market consensus favors Buffalo covering and winning outright, and the underlying injury report for New England’s defense only reinforces why. Unless Drake Maye can carry an offense that’s shown real scoring struggles this season, Sunday night in Orchard Park looks like it’s shaping up to go the way the numbers suggest.