The Mariners and Red Sox will face off in a series that could have serious American League Wild Card implications.

Logan Gilbert, out since late April, will be activated from the injured list and start for the Mariners on Monday against the Boston Red Sox.

Boston Red Sox (37-36, fourth in the AL East) vs. Seattle Mariners (36-34, second in the AL West) Seattle; Monday, 9:40 p.m. EDT PITCHING PROBABLES: Red Sox: Lucas Giolito (2-1, 5.45 ERA, 1.54 WHIP, 31 strikeouts);