Miami Dolphins vs San Francisco 49ers
Sunday, September 20, 2026 · Levi's Stadium, Santa Clara, CA
Quick Answer
As of August 1, 2026, our model favors the 49ers by 6.5 in Miami Dolphins vs San Francisco 49ers, NFL Week 2 2026 — 68% to win, and a 3-day rest edge for the 49ers, which the model does not price. Kalshi has not listed KXNFLGAME-26SEP20MIASF yet, so there is no price to compare: when it opens, 49ers at 63c or below (or Dolphins at 27c or below) is where the model would take a position.
MIA
-3.0
SF
+0.8
Dolphins
32%
model win prob
49ers
68%
model win prob
KXNFLGAME-26SEP20MIASFhasn't opened yet, so there is no price to compare. When it does, the model buys the 49ers at 63c or below, or the Dolphins at 27c or below — a five-point threshold either way. The market column fills in automatically.
Power-rating comparison
Rest first, ratings second: Dolphins at 49ers
Rest is the first thing worth pricing here. The 49ers come in with 3 more days off than the other side — 10 days' rest for the 49ers against 7 days' rest for the Dolphins. Our model does not adjust for rest. It prices the 49ers by 6.5 (68%) off ratings and home field alone, so if you believe that 3-day gap is worth something, that is an argument the number in front of you has not already counted.
The Dolphins come in off the Raiders, the 49ers off the Rams. 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.
The sharpest unit gap in the game runs one way: the 49ers offense grades +2.9 (6th of 32) against a Dolphins defense at -2.5 (28th) — 5.4 points of separation on our scale, and the single biggest reason the line sits where it does. Going the other direction, the Dolphins offense (-1.3, 25th) meets the 49ers defense (-2.9, 31st), a 1.7-point gap.
Zoom out to the full season and the model projects the 49ers at 8.8 wins (favored in 8 of 17) and the Dolphins at 6.7 (favored in 4) — 2.1 wins apart across the year. By win probability this is the 15th-hardest game on the 49ers' schedule and the 5th-hardest on the Dolphins'.
One team has owned this series: the Dolphins are 5-2 in 7 regular-season meetings since 2002. They have also met 1 time in the playoffs. They last met in 2024: Dolphins won 29-17 in December. Over their last 4 meetings the 49ers are 1-3. Worth saying plainly — the model does not know any of that. It reads 2026 ratings and nothing else, so a lopsided series is a story, not a number on this page.
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 68% on the 49ers here sits in that same band, and the history backs it.
Kalshi has not listed KXNFLGAME-26SEP20MIASF, so there is no price on the board and no edge to quote. The model's number to hold it to: 49ers 68%, Dolphins 32%. Applying our five-point threshold, that makes 49ers contracts a buy at 63c or below and Dolphins contracts a buy at 27c 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.
Dolphins vs 49ers — frequently asked
Who is favored in Dolphins vs 49ers in Week 2?
Our power-rating model favors the 49ers by 6.5 points, a 68% win probability over the Dolphins. The 49ers rate 14th of 32 (+0.8) and the Dolphins 28th (-3.0); Kalshi has not listed KXNFLGAME-26SEP20MIASF yet, so the model line is the only number on the board.
Does the rest advantage change the model line?
Not in our number. The 49ers have 3 more days off, but the model prices only team ratings and home field, so that edge is not baked into the 6.5-point line or the 68% win probability. If you think the rest gap is worth a point or two, that is an adjustment you make on top of this number, not inside it.
How do you take a position on Dolphins vs 49ers?
The contract will be KXNFLGAME-26SEP20MIASF 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 49ers at 63c or below, or the Dolphins at 27c 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 49ers host the Dolphins?
Miami Dolphins visit the San Francisco 49ers on Sunday, September 20, 2026 — a Sunday game in NFL Week 2, at Levi's Stadium, Santa Clara, CA.
What does the model project for the 49ers and Dolphins this season?
Across all 17 games the model projects the 49ers at 8.8 wins (favored in 8) and the Dolphins at 6.7 (favored in 4). This game ranks 15th-hardest on the 49ers' schedule and 5th-hardest on the Dolphins', by model win probability.
How often does the model win when it is 68% on a team like the 49ers?
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 49ers at 68% over the Dolphins sit in that band, off a 6.5-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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