Goalie Steve Mason has signed an extension with the Philadelphia Flyers, a source told ESPN.com. Mason played well despite the team's poor start and has helped the Flyers into playoff contention. Mason was acquired from Columbus last April, and has become the team's No. 1 goalie. After many years of instability in goal, the Flyers have been getting reliable goaltending from Mason all season long. The Flyers acquired Mason from the Columbus Blue Jackets on April 3, 2013 in exchange for goaltender Michael Leighton and a third-round pick in the 2015 NHL Draft. Mason also won the 2009 Calder Trophy as the League's top rookie. The 25-year-old Mason is 19-11-5 with a 2.48 goals-against average and .917 save percentage entering Philadelphia's game against the New York Islanders on Saturday night.