 When Dustin McGowan was removed from the rotation, Happ was given the 5th starter spot and made his first start of the season on May 5.On August 7, he set a career-high for strikeouts, with 12, in a 2–1 loss to the Baltimore Orioles.Happ earned his 50th career win on September 22, when the Blue Jays defeated the Seattle Mariners 14–4.