Leighton was drafted by the Blackhawks in the sixth round of the 1999 NHL Entry draft, and played in 42 games for the team in two seasons before leaving the team.
In his eight-year career, Leighton has also played for the Nashville Predators, Philadelphia Flyers, and Carolina Hurricanes. In 16 Stanley Cup Playoff games, the 33-year-old is 8-4. Leighton currently holds the NHL record for most shutouts in a postseason series (three against Montreal in the 2010 Eastern Conference Final).
Leighton was in goal during for the Flyers in Game 6 of the 2010 Stanley Cup Final, when Patrick Kane scored in overtime to win the Blackhawks their first championship in 49 years.