In the 2013 American League Division Series, he pitched 3.2 scoreless innings over 3 games, notching a win and allowing two hits and one walk while striking out four, as the Red Sox defeated Tampa Bay. In the 2013 American League Championship Series, he added 3.1 scoreless innings against the Detroit Tigers, bringing his post-season total to 7 scoreless innings in 7 appearances, in which he held the opposition to a .130 batting average. Breslow wrote a blog during the 2013 post-season.