NFL Predictions

Miami Dolphins vs San Francisco 49ers Predictions

Sunday, September 20, 2026 at 4:25pm EST at Levi's Stadium, Santa Clara, CA

Miami

Dolphins

0-1
Spread +13.5
@
San Francisco

49ers

1-0
Spread -13.5
50% 50%
Spread Miami Dolphins +13.5 San Francisco 49ers -13.5
Moneyline Miami Dolphins +625 San Francisco 49ers -950
Total Over 44.5 (-115) Under 44.5 (-105)

Who wins this game?

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Dolphins vs. 49ers Prediction: Miami's Defensive Absences Meet a 13.5-Point Spread

Analysis updated September 19, 2026 at 1:03 AM CDT

San Francisco is the likely winner, but backing the favorite requires more than a strong opener and Miami's injury concerns.

Miami's absences add to the defensive test

San Francisco rushed for 174 yards in its opener and now faces Miami without linebackers Chop Robinson and Ronnie Harrison. That matchup favors the 49ers, though SPF's 13.5-point spread requires them to win by at least 14 to cover.

The San Francisco 49ers' official matchup preview reports that Brock Purdy threw three touchdown passes in a 27-7 win over the Rams. Miami lost 27-13 to Las Vegas. Those opening results make San Francisco the likely winner, but one game apiece offers limited evidence for projecting Sunday's margin.

In a transcript published by the Miami Dolphins, coach Jeff Hafley ruled out Robinson following a practice concussion and confirmed Harrison would also miss the game. Their absences reduce Miami's defensive options against an offense that produced both rushing yards and passing touchdowns in Week 1.

The price leaves little room for error

The San Francisco 49ers' official injury report lists running back Kaelon Black as questionable with a groin injury and kicker Eddy Piñeiro as questionable with an illness after missing practice all week. Black supplied 65 rushing yards in the opener; his status matters to the rushing rotation, while Piñeiro's availability adds uncertainty to scoring opportunities.

SPF's -900 moneyline requires a 90% win probability just to break even. These results and availability reports don't establish that level of confidence or justify laying 13.5 points. Pass on the wager; no exact score prediction is warranted.

Pick San Francisco 49ers
Confidence medium
Betting lean Pass
Odds and availability can change. Confirm current markets before placing a wager.
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