During the 2012–13 NHL lockout, Chara agreed to play for Lev Praha of the KHL until NHL play resumed. He returned from the lockout to post another solid season, with 7 goals and 12 assists in the 48-game season. His point totals were down due to some of Boston's struggles down the stretch, particularly on the power play, where Chára only posted one assist all season despite plenty of ice time in man advantage situations. However, he remained solid on defence and a key contributor for the Bruins. In the 2013 playoffs, he was physically dominant and played a key role in leading his team to the Finals.