Seattle Mariners vs San Diego Padres Prediction, Odds and Picks for Today, 04/15/26

The Padres took the series opener against the Mariners 4-1 on Tuesday, snapping Seattle’s 4-game winning streak while pushing San Diego’s winning streak to 6. In fact, the Padres have won 10 of their last 12 following a 1-4 start to the year. Taking the mound for Seattle is Emerson Hancock, who has been very good so far in 2026. His first start of the season was his best, holding the Guardians to 6.0 hitless innings with 9 strikeouts and just 1 walk. His second start was almost as good, as he held the Angels to 1 run on 6 hits in 6.2 innings with 5 strikeouts. He showed some mortality in this third start, however, allowing 3 runs on 4 hits with 2 walks in 5.0 innings against the Astros last Friday. The right-hander has a 2.04 ERA and a 0.74 WHIP, and the advanced metrics suggest those numbers are no fluke (2.40 xERA, 2.86 xFIP, 2.64 SIERA.

For the Padres, Randy Vasquez will toe the rubber for the fourth time this year. San Diego is 3-0 in his starts, but Vasquez earned the win in only 1 of those. Still, he had allowed just 2 earned runs this year in 17.2 innings — all while surrendering 15 hits and only 4 walks while accumulating 19 strikeouts. Furthermore, his ERA is a sparkling 1.02 — but will that hold? His 4.23 xERA, 3.11 xFIP and 3.01 SIERA suggest there is regression looming. Vasquez has always been better against right-handed batters than left-handed, and Seattle has a ton of left-handed bats. That alone has me interested in the Mariners, as well as the fact that they boast the best bullpen ERA in the league thus far. Give me Seattle in this one.

Mariners vs Padres prediction: Seattle ML (-104) available at time of publishing. Playable to -110. 

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