In the following 2010–11 season, Beauchemin began the season on the top defensive pairing, alongside Dion Phaneuf. With his production down and with the Maple Leafs heading towards again missing the playoffs, on February 9, 2011, Beauchemin was traded back to the Anaheim Ducks in exchange for left winger Joffrey Lupul, defenceman Jake Gardiner and a conditional fourth-round draft pick in 2013.