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Mountcastle drives in 9 as Orioles outslug Oakland 12-8

Ryan Mountcastle homered twice and tied a team record with nine RBIs, helping the Baltimore Orioles rally from a four-run deficit to a 12-8 victory over the Oakland Athletics.

Baltimore's top pitching prospect made his home debut — and then this became a historic night for a completely different reason.

Ryan Mountcastle homered twice and tied a team record with nine RBIs, helping the Orioles rally from a four-run deficit to a 12-8 victory over the Oakland Athletics on Tuesday night. Mountcastle hit a three-run homer in the fifth inning and added a grand slam in the seventh as Baltimore overcame a difficult Camden Yards debut for right-hander Grayson Rodriguez.