MLB · MIA at SD
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San Diego’s recent results favor the home team, while Alcantara’s better season ERA and Buehler’s limited innings temper the pick.
The Miami Marlins visit the San Diego Padres at Petco Park on September 20, 2026, in this MLB matchup. MLB.com lists right-handers Sandy Alcantara and Walker Buehler as the probable starters. San Diego is 85-69, while Miami is 76-78.
Covers lists the Padres at 9-1 over their last 10 games and the Marlins at 4-6. San Diego also won their September 18 meeting, 8-2. Those results support a Padres lean, although a short stretch does not establish their probability of winning this game.
Alcantara owns the better season ERA, 3.84 against Buehler’s 4.58. The recent comparison reverses that advantage: Covers reports a 5.83 ERA across Alcantara’s last five starts and a 3.33 ERA across Buehler’s last five.
Alcantara allowed seven earned runs, three home runs and four walks in 4 1/3 innings against the Mets on September 8. He also surrendered four earned runs in six innings against Kansas City on September 3 and Washington on August 29.
Buehler held the Yankees to one earned run in five innings on September 4, but his September 9 outing against Washington lasted only 2 1/3 innings, with two earned runs allowed. That short appearance adds uncertainty about how much work he can cover. Covers also lists Padres reliever Jeremiah Estrada on the injured list; available bullpen workload details do not establish a relief advantage.
SportsJaw lists San Diego’s moneyline at -135 and Miami’s at +115. The Padres’ recent form and Alcantara’s struggles support a slight preference for San Diego at that price. Alcantara’s stronger season ERA keeps confidence low.
The total is 8, with over 8 (-105) and under 8 (-115). San Diego’s last-10 over/under record is 9-0-1, but that trend alone offers insufficient support for a total wager. The projection of Padres 5, Marlins 3 lands on the posted total.
Prediction: San Diego Padres 5, Miami Marlins 3. Betting lean: San Diego Padres moneyline (-135), with low confidence.