(Seattle, WA) -- The Mariners are grabbing a home series win. Seattle beat the Orioles 9-3 at T-Mobile Park. Chris Flexen picked up his fourth win after allowing three runs over six frames. Rookie Julio Rodriguez hit his 12th home run of the season with a two-run bomb in the fourth inning. Sam Haggerty had three hits and an RBI for Seattle, which improved to 36-and-41. The M's host the Athletics tonight and send right-hander Logan Gilbert to the mound.