With a third-inning blast off Seattle right-hander Aaron Harang onto Eutaw Street, first baseman Chris Davis continued to cement his place in the Orioles history books.
Davis became just the fifth Oriole to hit 40 home runs in a season, joining Brady Anderson (50, 1996), Frank Robinson (49, 1966), Jim Gentile (46, 1961) and Rafael Palmeiro (43, 1998).
The slugger continued his monster season with his 101st RBI, which gave the Orioles a 5-3 lead over the Mariners.
The 40 home runs also tie a personal mark for Davis, as he hit 40 home runs in 2008 between Double-A, Triple-A and the majors with Texas. He hit 13 homers in 46 games with Frisco, 10 homers in 31 games with Oklahoma and 17 homers in 80 games with the Rangers that year.
Davis is now on pace for 59 home runs this year.