Seattle stuns A’s on Herrmann, Seager heroics

Down to their last out on Tuesday night, the Mariners got a gift from Matt Chapman. Chapman — heralded as one of the game’s most brilliant third basemen — committed a two-out error on a potentially game-ending Ryon Healy grounder to extend the bottom of the ninth inning. Athletics closer Blake Treinen couldn’t overcome the miscue, surrendering a pinch-hit, game-tying RBI single from Kyle Seager to send the game into extra innings. Chris Herrmann ended up putting the ribbon on this one, crushing a walk-off, two-run homer to right field to give the Mariners a 10-8 victory in 11 innings at Safeco Field.