[3] Following his rookie season in the Quebec Major Junior Hockey League (QMJHL) with the Baie-Comeau Drakkar, Leblond was selected 216th overall in the 2004 NHL Entry Draft by the New Jersey Devils.

After an injury to forward Bobby Holík, he made his NHL debut on October 22, 2008, and registered an assist on a David Clarkson goal during a 5-0 victory over the Dallas Stars.

The fight took place with 4 minutes and 17 seconds remaining in the third period; Leblond was charged with an instigator penalty resulting in an automatic one-game suspension.

During his pre-season debut with the Flames, he received a two-minute penalty and ten-minute misconduct for hitting Vancouver Canucks forward Matt Clackson into the boards from behind.

[8] As a free agent on September 8, 2015, Leblond returned to his original team for the first time since 2011, agreeing to a one-year, two-way contract with the New Jersey Devils.

[12] However, his retirement was short lived, agreeing to return to the professional circuit in signing midway into the 2017–18 season with the Devils' secondary affiliate, the Adirondack Thunder of the ECHL, on December 2, 2017.