BALTIMORE (Interstat) — Andruw Monasterio hit a grand slam and Willson Contreras added a three-run homer in a 10-run ninth inning as the Boston Red Sox routed the Baltimore Orioles 17-1 on Saturday afternoon at Oriole Park at Camden Yards. Attendance was 33,582, and the game lasted 2 hours, 50 minutes.

Boston scored three in the second on a double by Caleb Durbin and singles from Isiah Kiner-Falefa and Ceddanne Rafaela. A sacrifice fly by Contreras made it 4-0 in the fourth, and Connor Wong’s three-run double in the fifth extended the lead to 7-0. The Orioles got their lone run in the seventh on a groundout by Leody Taveras.

The Red Sox then erupted in the ninth. Contreras singled in a run, Monasterio cleared the bases with his grand slam, Durbin hit a solo homer and Contreras capped the inning with a three-run shot. Monasterio finished 3 for 6 with four RBIs, Contreras was 2 for 4 with five RBIs, and Rafaela went 3 for 5.

Garrett Crochet (3-3) allowed three hits over six scoreless innings with seven strikeouts to earn the win. Trevor Rogers (2-3) took the loss. The Red Sox improved to 10-17, while the Orioles fell to 13-14.