Cleveland Browns vs Jacksonville Jaguars
Sunday, September 13, 2026 · EverBank Stadium, Jacksonville, FL
Quick Answer
As of August 1, 2026, Kalshi implies 78% for the Jaguars in Cleveland Browns vs Jacksonville Jaguars, NFL Week 1 2026, while our model has the Jaguars by 7 (70% to win) — a 7.2pp gap. Value side: the Browns.
CLE
-2.0
JAX
+2.7
Browns
30%
model win prob
Jaguars
70%
model win prob
Power-rating comparison
Why the model has the Jaguars by 7
The model does not think this one is close. The Jaguars rate 6th of 32 at +2.7, the Browns 25th at -2.0, and once home field is applied the line lands on the Jaguars by 7 — 70% to win. That is the 2nd-widest gap among the 16 games on the Week 1 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 Browns need the price to be wrong, not the matchup.
The defense wins the headline matchup here: the Jaguars grade 0.0 on that side of the ball (9th of 32) against a Browns offense at -3.7 (31st) — 3.7 points the wrong way for the offense. Going the other direction, the Jaguars offense (+1.8, 9th) meets the Browns defense (+1.9, 3rd), a 0.1-point gap. Special teams adds to it: the Jaguars grade +0.9, 3rd in the league, against -0.2 (31st) on the other side — close to a point of hidden margin.
Zoom out to the full season and the model projects the Jaguars at 9.5 wins (favored in 11 of 17) and the Browns at 7.9 (favored in 6) — 1.6 wins apart across the year. By win probability this is the 16th-hardest game on the Jaguars' schedule and the 1st-hardest on the Browns'. Nothing on the Browns' schedule projects harder than this one.
Recent history, for context only: 12 regular-season meetings since 2002, 7-5 in the Browns' favour. They last met in 2024: Browns won 18-13 in September. Over their last 4 meetings the Jaguars are 1-3. It is not an input to the line — rosters turn over faster than series records do.
Conditions are unlikely to be the story: across 10 Jacksonville home games in September since 2015, the median temperature was 86°F and the median wind 7 mph. That is a neutral-weather profile, which is worth knowing mostly because it removes an excuse from both sides.
A note on confidence this high: the model has only been this sure 312 times in 3266 walk-forward games from 2013-2024. Teams it put in the 70-75% range won 71% of those. So a 70% Jaguars number is well supported by the record, and still loses about 29 times in 100 — which is exactly why the position is a price question, not a certainty question.
Kalshi's KXNFLGAME-26SEP13CLEJAC contract implies 78% for the Jaguars against our 70% — a 7.2-point gap. That clears our 5-point threshold, which flags the Browns as the value side at 23c.
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Browns vs Jaguars — frequently asked
Who is favored in Browns vs Jaguars in Week 1?
Our power-rating model favors the Jaguars by 7 points, a 70% win probability over the Browns. Kalshi's KXNFLGAME-26SEP13CLEJAC market implies 78% for the Jaguars — a 7.2pp gap versus the model.
What would it take for the Browns to win?
The 7-point line comes from a 4.7-point rating gap, and a single-game margin has roughly a 13.5-point standard deviation around it — which is why the Browns still project at 30% rather than zero. Their best structural path is the unit matchup they win on paper. Ratings do not price injuries or turnover luck, which is where most upsets actually come from.
How do you take a position on Browns vs Jaguars?
The contract is KXNFLGAME-26SEP13CLEJAC on Kalshi, a CFTC-regulated exchange open to traders in all 50 states. Jaguars YES is quoted around 78c against our 70% model number. 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 Jaguars host the Browns?
Cleveland Browns visit the Jacksonville Jaguars on Sunday, September 13, 2026 — a Sunday game in NFL Week 1, at EverBank Stadium, Jacksonville, FL.
What does the model project for the Jaguars and Browns this season?
Across all 17 games the model projects the Jaguars at 9.5 wins (favored in 11) and the Browns at 7.9 (favored in 6). This game ranks 16th-hardest on the Jaguars' schedule and 1st-hardest on the Browns', by model win probability.
How often does the model win when it is 70% on a team like the Jaguars?
71% 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 70-75% range 312 times, and those teams won 71% of them. The Jaguars at 70% over the Browns 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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