2007-08: Jerome Gauthier-Leduc was chosen by Drummondville in the first round (18th overall) of the 2008 QMJHL Draft by the Drummondville Voltigeurs.
2008-09: Traded to the Rouyn-Noranda Huskies prior to the start of the season. In his QMJHL rookie season, Gauthier-Leduc played in 52 games for the Huskies, scoring 1 goal and adding 16 assists for 17 points. In 6 playoff games, Gauthier-Leduc picked up 2 assists.
2009-10: Gauthier-Leduc played in 68 games for the Huskies. He scored 20 goals and added 26 assists for 46 poiints, turning in a +26 rating for the season. In 11 playoff games, he scored 2 goals and chipped in 4 assists for 6 points. Played for Team Orr at the 2010 CHL Top Prospects Game.
2010-11: Gauthier-Leduc was obtained from Rouyn-Nouranda by Rimouski in exchange for 1st and 2nd round draft picks in 2012 in a June deal. In 61 games for the Oceanic, he was third on the team with 56 points. He scored 18 goals with 38 assists as Rimouski finished fifth in the six-team East Division. Gauthier-Leduc's -1 plus/minus was second-best among the four defensemen who played fifty or more games for Rimouski. In five playoff games he scored 1 goal ( a power play tally) and had 2 assists and was -2 with 6 PMs.
2011-12: Gauthier-Leduc led all QMJHL defensemen in scoring with 74 points in 62 games in his second season with Rimouski. He scored 28 goals with 46 assists and was plus-13 with 41 penalty minutes, receiving the QMJHL's Butch Bouchard Trophy as the league's top defenseman. He was a big part of the Oceanic's playoff run as Rimouski reached the QMJHL finals after finishing fourth in the East Division. Gauthier-Leduc scored 9 goals with 10 assists in 21 playoff games and was plus-four with 12 penalty minutes. Five of his nine playoff goals were scored on the power play. Gauthier-Leduc attended Hockey Canada's tryout camp for the 2012 U20 World Junior Championship but was not selected to play in the tournament.
2012-13: Gauthier-Leduc played for Buffalo's AHL affiliate in Rochester in his first pro season. The second youngest defenseman on a crowded Amerks blue line, he scored 3 goals with 4 assists in 48 games and was -9 with 8 penalty minutes. Rochester finished second in the North Division and were swept by first place Toronto in the first round of the playoffs. Gauthier-Leduc played in all three playoff games and was -3 with no points nor penalty minutes.
Strong on his skates with excellent vision, Gauthier-Leduc has the ability to quarterback an NHL powerplay one day. He has excellent vision in the offensive zone and has excellent puck-moving and shooting ability. However, the knock against Gauthier-Leduc is his lack of size, and some scouts are still not completely sold on Gauthier-Leduc’s potential.
Gauther-Leduc struggled in his first pro season. His offensive skills have not translated to the pro level, though he has two more years left on his entry-level contract to prove himself. Gauther-Leduc has to establish himself in the AHL before thinking about playing in the NHL. With Buffalo’s deep crop of prospects, Gauthier-Leduc is facing an uphill battle.