CLEVELAND (AP) — José Ramírez belted his éRamísixth career grand slam and had three hits, Will Brennan added a solo homer and the Cleveland Guardians beat the Boston Red Sox 6-4 on Thursday.

Cleveland has the best record in the American League at 18-7 and matched the second-best mark in franchise history through 25 games. The Guardians won their season series against Boston 5-2 -- all in an 11-day span.

“Once the guys arrive in the clubhouse before the game, you feel that good energy,” Ramírez said through interpreter Agustin Rivero. “With that energy we can compete with anybody, so I think that’s a good energy to have.”

Rafael Devers had three hits and Rob Refsnyder tripled in a run for the Red Sox. Jarren Duran added an RBI single in the sixth for Boston, which went 4-2 on a six-game trip through Pittsburgh and Cleveland.

Ramírez’s slam off Chase Anderson (0-1) came one pitch after he appeared to strike out to end the second, but Red Sox catcher Reese McGuire couldn’t hold onto the foul tip. Brennan also homered in the inning as Cleveland went ahead 5-0.