In the 2010–11 season, Boucher split time in goal with standout rookie Sergei Bobrovsky after Leighton was demoted to the AHL, in part for hiding an injury. Bobrovsky started most of the games, and was named the Flyers playoff starter. After Game 2 of the conference quarter-finals against the Buffalo Sabres, in which Boucher relieved Bobrovsky and earned the win, Boucher started the next three games. However, he was pulled in Game 5 in favour of Leighton, who was called up as a third goaltender. Leighton played well but lost Game 5 in overtime, nonetheless earning the start for Game 6. However, in Game 6, Leighton allowed three goals in the opening period, and once again Boucher was able to earn the win in relief, making Boucher the only goaltender in NHL history to record two wins in a playoff series when coming in relief. Boucher went on to start Game 7 as the Flyers defeated Buffalo. Boucher started the first three games in the next round against Boston, but played poorly, allowing for deposed starter Bobrovsky to return in Game 4 as the Flyers were ultimately swept.