In his first start of 2013 on April 2, Bumgarner threw eight shutout innings against the Dodgers and added an RBI in a 2–0 victory. Against the Braves on May 11, he had a season-high 11 strikeouts, picking up the win in a 10–1 victory. Bumgarner was selected to represent the National League for the 2013 Major League Baseball All-Star Game, his first career All-Star selection. Though on the roster, he was not used in the NL's 3–0 loss to the AL. On July 27, he held the Cubs scoreless for eight innings but received a no-decision in a 1–0 loss. He matched his season-high in strikeouts with 11 on August 2 in a 4–1 victory over the Tampa Bay Rays.