 Hanson was called up by the Atlanta Braves on June 3, 2009 after the team cut Tom Glavine.He made his debut on June 7 against the Milwaukee Brewers, pitching 6 innings, striking out 5, giving up 6 earned runs, 3 home runs, and receiving a no decision.He gave up two home runs to Ryan Braun, the first being the first hit allowed in Hanson's major league career.