The Mariners opened scoring in the top of the second. Raul Ibanez doubled to deep center to score Michael Morse.
Three innings later, the Orioles responded with a two-run home run to left from Danny Valencia. The Orioles took the lead 2-1.
In the top of the seventh, Henry Blanco homered to left with Brendon Ryan on base giving the M’s a 3-2 lead.
The Mariners kept the Orioles scoreless the final two and a half innings to pick up the win.
Mariners’ Joe Saunders took the win on the mound, while Orioles’ Wei-Yin Chen recorded the loss. Mariners’ Danny Farquhar picked up the save after one inning pitched.