 The Orioles open a six-game road trip when they visit the Seattle Mariners for a three-game set that begins tonight. Right-hander Grayson Rodriguez will tow the rubber for the O's in search of his 10th win. The Mariners are expected to start righty George Kirby. First pitch is at 9.40 p.m. Baltimore currently percentage points ahead of the Yankees for first place in the AL East at 53-31.