The New York Yankees and Seattle Mariners square off on May 12, 2025, at T-Mobile Park in what shapes up to be a compelling early-season showdown between two division leaders, with the Yankees entering at 23–17 atop the AL East and the Mariners narrowly leading the AL West with a 22–17 mark. Both teams come into the series with momentum and playoff aspirations, but each has had to navigate key injuries and lineup shifts to remain competitive, setting the stage for a tightly contested three-game set. The Yankees arrive riding the elite production of Aaron Judge, who is currently batting a scorching .409 and continues to carry the offensive load in the absence of DJ LeMahieu and Giancarlo Stanton. Judge’s surge has been complemented by rookie phenom Jasson Domínguez, who recently hammered three home runs in a single game against the Athletics, and the contributions of Paul Goldschmidt and Ben Rice, who have stepped up as dependable bats in the middle of the order. Clarke Schmidt gets the nod for New York and will look to extend a strong stretch of outings in a rotation that has been patchworked without Gerrit Cole and Marcus Stroman. On the other side, the Mariners return home with a 12–7 record at T-Mobile Park and a lineup that thrives in tight games, built on gritty at-bats, opportunistic base running, and late-inning execution. Emerson Hancock will take the mound for Seattle, tasked with containing a Yankees lineup that has slugged its way through recent series wins despite being undermanned.

Seattle’s offensive leaders—namely J.P. Crawford, Julio Rodríguez, and Randy Arozarena—will look to spark early run support, knowing that the Yankees’ bullpen has been strong in high-leverage spots and has made a habit of shutting the door in close games. While both teams boast top-end talent, they’ve also each been forced to test their depth, and this series may well come down to execution in the margins—defensive efficiency, timely two-out hits, and bullpen command in the late innings. From a betting perspective, the Yankees hold a 6–4 ATS edge in the last 10 head-to-head meetings, but both clubs are hovering just above .500 against the spread overall this season, making this a true coin-flip on paper. With playoff implications, injury recovery timelines, and positional battles all taking shape, this matchup represents more than just a mid-May series—it’s a measuring stick for where each team stands as the season approaches its second quarter. If Judge and Domínguez stay hot and Schmidt keeps the ball in the park, New York may have the edge, but if Seattle can capitalize on their home-field advantage and manufacture runs early against a vulnerable Yankee rotation, the Mariners are more than capable of defending their turf. In what could be a preview of a potential postseason clash, expect three games loaded with tension, star power, and meaningful baseball between two teams built for October.