Trevor Story and Roman Anthony spark Red Sox walk-off in 10th to outlast the Mariners, 9-8

The Boston Red Sox forced a dramatic extra-inning conclusion and then ended it with authority. In a 9-8 walk-off victory in 10 innings over the Seattle Mariners, the deciding sequence came late and belonged to Trevor Story, whose go-ahead swing produced a hit that sent the game to a warning-track outcome. The result was the kind of finish that rewrites a night’s worth of at-bats into a single, separating moment.

Story’s winning hit arrived against Mariners pitching in the 10th, off Cooper Criswell. According to the Red Sox report, the ball traveled to the warning track in center, a hit that carried enough to deliver the final run and complete the walk-off. With the game on the brink, it was a clean, decisive end to a contest that required both clubs to keep finding ways to keep the margin from separating.

Roman Anthony, meanwhile, was part of the story of Boston getting right late. The official Red Sox account framed the moment as “Anthony is back,” casting his presence as a spark in the late stages. While the report emphasizes his return and the team’s ability to manufacture the late-winning look, it also positions the game’s decisive swing as a collaborative payoff, with Story delivering the final blow after Boston’s extra-innings push kept the chances alive.

The game’s tight final score, 9-8, underscores how little room existed for either team once the 10th began. When a game reaches that stage, innings become chess moves, bullpen usage becomes irreversible, and every baserunner carries more consequence than usual. The Red Sox, in the official telling, were the team that converted that pressure into a walk-off outcome rather than letting it drift into the next inning.

For Seattle, the walk-off defeat was a reminder that extra innings can magnify small margins. Criswell’s involvement on the play that ended the game put him at the center of the final moment, even as the Mariners had otherwise matched Boston well enough to keep the game within reach through regulation and beyond.

What to watch next is whether this kind of late-game execution becomes a pattern for Boston as the regular season’s end approaches. A walk-off win powered by veteran bats and framed by Anthony’s “back” moment suggests the Red Sox are aligning their late-inning options. For the Mariners, the focus will likely be on tightening late defensive and baserunning details, because in games that reach the 10th, one extra-base sequence can eliminate a winning chance instantly.