BOSTON (Interstat) — Angel Martínez homered in the first inning, and Joey Cantillo pitched five shutout innings as the Cleveland Guardians beat the Boston Red Sox 1-0 on Thursday, Sept. 24, 2026, at Fenway Park. Martinez finished 1 for 4 with one RBI. Cantillo improved to 11-9 after allowing one hit, walking two and striking out four. Ranger Suarez fell to 8-5 for Boston, yielding one run on three hits over five innings with one walk and five strikeouts. Cade Smith pitched a perfect ninth, striking out three, for his 42nd save. The Guardians totaled four hits, while the Red Sox had two. Cleveland scored its lone run in the first. Daniel Espino, Erik Sabrowski, Hunter Gaddis and Smith combined for four scoreless relief innings. Raymond Burgos, Patrick Sandoval and Erik Miller kept Cleveland quiet late. The game took 2 hours, 27 minutes and drew 36,711 fans. Cleveland improved to 84-76 and clinched a postseason berth. Boston dropped to 86-74. Cleveland next travels to Kansas City, while Boston hosts the Chicago Cubs.