The A's made their 26th postseason appearance in 2013. Gray took the mound for Oakland in the ALDS against the Detroit Tigers. Although he wasn't credited with the win, the 5-foot-11, 195-pound right-hander dominated the Tigers in Game 2. Gray allowed four hits, walked two, and struck out nine hitters on 111 pitches. The A's scored in the ninth inning on Stephen Vogt's walk-off single to defeat Detroit 1-0.