Orioles 1, Mariners 0
BALTIMORE — Chris Tillman pitched seven three-hit innings in a duel with Hisashi Iwakuma, Nick Markakis hit his first career leadoff homer and the Orioles won their fourth straight series. Iwakuma's only glaring error came against the first batter he faced, when Markakis hit a shot to right on a 3-and-2 pitch. Markakis had three hits and now has 1,501 for his career. The victory was the ninth in 13 games for the AL East-leading Orioles. It was the first time they have ever won on a leadoff homer.