At 12-19, the A's have their worst record after 31 games since 2001 (11-20).
The long ball came four innings after Evan Scribner, one of few reliable relief arms the A's are carrying these days, snapped an 8 2/3-inning scoreless streak by allowing Seattle to score two runs and tie the game in the seventh inning.
The right-hander allowed a leadoff base hit to Dustin Ackley, who scored on Brad Miller's two-out double. That's when A's manager Bob Melvin turned to left-hander Fernando Abad, who offered up a game-tying double to Robinson Cano.