Cedric Mullins is leading off and playing center field tonight after getting a rest day for the final game in Boston.
Adley Rutschman is catching and batting fifth, followed by first baseman Ryan Mountcastle.
Ramón Urías is the third baseman again. Rougned Odor gets the start at second base against Mariners right-hander George Kirby.
Bryan Baker is making his second start. Left-hander Zac Lowther was recalled to provide a fresh bullpen arm and provide length.
For the Orioles
Cedric Mullins CF
Trey Mancini DH
Anthony Santander RF
Austin Hays LF
Adley Rutschman C
Ryan Mountcastle 1B
Rougned Odor 2B
Ramón Urías 3B
Jorge Mateo SS
Bryan Baker RHP
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