Josh Donaldson hit a tying two-run home run in the ninth inning and Brandon Moss hit a game-ending three-run homer in the 10th, and the Oakland Athletics gained ground on the first-place Texas Rangers with a stunning 7-4 win over the Seattle Mariners on Saturday.
Coco Crisp singled off Oliver Perez (1-3) leading off the final inning for his fourth hit. Stephen Pryor entered with one out and walked Yoenis Cespedes on four pitches.
Moss hammered the first pitch against Pryor well over the wall in right for his 21st home run, sending Oakland streaming out of the dugout to celebrate its major-league leading 14th walk-off win.
The A's are 2 1/2 games back of Texas in the division and 2 1/2 ahead of the Los Angeles Angels for the final wild card. The Angels-Rangers game in Texas was being delayed by inclement weather.
Oakland hosts Texas in the final three games of the season starting Monday.
Donaldson's drive off Tom Wilhelmsen in the ninth landed just over the wall in cente...