2009-10: Matia Marcantuoni played two games for the St. Michael’s Buzzers junior team in the CCHL and was among the leading scorers for the Toronto Marlies midget AAA team. In two games with the Buzzers he scored 2 goals with 2 penalty minutes. He scored 39 goals with 33 assists in 79 games for the Marlies. Marcantuoni was selected by Kitchener in the first round (18th overall) of the 2010 OHL Priority Draft.
2010-11: Marcantuoni skated in 42 games in his first OHL season with Kitchener and was the captain of gold medal-winning Team Ontario at the 2011 U17 World Hockey Challenge. He scored 11 goals with 16 assists and was minus-seven with 26 penalty minutes during the regular season for the Rangers. He was scoreless and minus-four in the Rangers seven-game playoff series with Plymouth. Marcantuoni scored 2 goals with 3 assists and had 4 penalty minutes in five games at the WHC.
2011-12: Marcantuoni was limited to 25 games with Kitchener and appeared in just one game for Canada at the 2011 U18 Ivan Hlinka tournament in an injury-filled season. He suffered a season-ending shoulder injury in January that required surgery. In OHL play he scored 9 goals with 5 assists and was plus-two with 10 penalty minutes. Marcantuoni suffered a concussion in the first game of the Ivan Hlinka tournament which kept him out of the rest of the tournament. Canada defeated Sweden in the gold medal game. Marcantuoni was invited to the NHL Draft Combine and ranked 59th amongst North American skaters in Central Scouting’s final rankings prior to the 2012 NHL Draft.
2012-13: Marcantuoni showed durability in his third OHL season, skating in a career-high 64 regular season games and all 10 playoff contests for Kitchener after injuries derailed him in the previous two seasons. More of a two-way, agitating forward for the Rangers than a pure scorer, he scored 7 goals with 18 assists and was -3 with 34 penalty minutes. Kitchener finished third in the Midwest Division and reached the second round in the playoffs. Marcantuoni scored 1 goal with 1 assist and was -2 with 6 penalty minutes in the playoffs. He joined the Penguins AHL affiliate in April on an amateur tryout contract but did not appear in any games.
2013-14: Marcantuoni attended training camp with the Penguins and signed a three-year entry-level contract in October 2013 — returning to Kitchener for his fourth OHL season. He made his pro hockey debut in April in a game with Penguins AHL affiliate Wilkes-Barre/Scranton. He had no points with 2 penalty minutes in his only AHL game. Marcantuoni played 54 games for Kitchener in his final junior season — missing over a month after re-aggravating his shoulder injury in November — and scored 15 goals with 17 assists; finishing -30 with 29 penalty minutes. Six of his 15 goals came on the Rangers’ power play. Kitchener finished last in the Midwest Division; missing the OHL playoffs.
Marcantuoni has blistering speed and a feisty personality, He plays with energy every time he touches the ice and is a strong skater and combines that skating ability with a physical recklessness. He has some talents that could translate into offensive ability — particularly his ability to carry and protect the puck — but will almost certainly make his living creating havoc. Marcantuoni's style has taken its toll at times as he has missed significant time due to injury during his career.
Marcantuoni attended training camp with the Penguins before being assigned to AHL affiliate Wilkes-Barre/Scranton to start the 2014-15 season. Seeing limited ice time at the start of his first pro season, he was assigned to the ECHL's Wheeling Nailers for an 11-game stint in November 2014, scoring at a point-per-game clip for the Nailers, before being recalled by the AHL Penguins. While not likely to score at that rate either in the AHL or at the NHL level, Marcantuoni projects to being an energy-type agitating forward capable of creating space for teammates and making things difficult on opponents.