2006-07: The third-leading rookie scorer in the QMJHL – behind Jakub Voracek and David Perron – DiDomenico was a surprise for the expansion Saint John Sea Dogs from the get-go. The Toronto native went unselected in the OHL draft, but received a call from the Sea Dogs, who were desperately searching for talent, and never looked back. Playing a full 70-game slate, the feisty center scored 25 goals and added 50 assists for 75 points in his rookie season. On a team devoid of any scoring whatsoever – the next leading scorer had 53 points – this was quite a feat. Chosen by the Toronto Maple Leafs in the 6th round, 164th overall, of the 2007 NHL Draft.
2007-08: In his second season with the Saint John Sea Dogs (QMJHL), DiDomenico saw his numbers improve over last season’s. In 70 games, he netted 39 goals and 56 assists, bringing his point total up to 95, 20 more than last season. He added an additional 19 points in 14 playoff games with the club. He was named Offensive Player of the Month after recording 12 points in six games with two game-winning goals and a +8 plus/minus rating. He was a member of the QMJHL Team at the 2007 ADT Canada-Russia Challenge.
2008-09: Signed a three-year contract with the Maple Leafs in March of 2009.
2009-10: The pivot missed most of the regular season as he returned from a broken femur suffered during the 2009 QMJHL playoffs. He returned for the final 12 regular season games for Drummondville, scoring 7 goals, 15 assists for 22 points. He added 7 goals and 21 points in 14 playoff games, again leading the Voltigeurs. His 14 postseason assists led the team and he tied for the team lead with 21 playoff points.
2010-11: DiDomenico split his rookie season between the AHL's Rockford IceHogs, where he scored 4 assists in 25 games, and the ECHL's Toledo Walleye, where he scored 9 goals and 16 assists for 25 points in 37 games.
DiDomenico is on the small side at 5'11 and only 165 pounds but has overcome his size deficiencies so far with excellent hockey sense. Though his skating is only average, he is excellent on faceoffs and is a good penalty killer. If he is able to add muscle to his frame and continue to play a smart, two-way game he could surprise.
DiDomenico will look to stick in the AHL with Rockford in the 2011-12 season, though another stint with Toledo in the ECHL is not out of the question.