2010-11: Carter Verhaeghe played for the Hamilton Junior Bulldogs minor midget AAA team in Ontario. He scored 34 goals with 30 assists in 45 games. Verhaeghe was selected by Niagara in the second round (38th overall) of the 2011 OHL Priority Draft.
2011-12: Verhaeghe skated in 62 games for Niagara in his first OHL season. He scored 4 goals with 12 assists and was +6 with 10 penalty minutes. Niagara finished first in the Central Division, tying Plymouth for the second most points in the league (97), and reached the OHL Finals against London. Verhaeghe played in 19 of 20 playoff games, finishing with 1 goal and 2 assists, and was +3 with 2 penalty minutes.
2012-13: Verhaeghe was the fourth-leading scorer for Niagara in his second season with the IceDogs and won a gold medal representing Canada at the 2013 U18 World Junior Championship. He scored 18 goals with 26 assists in 67 games for Niagara and was -12 with 22 points. The Ice Dogs finished fourth in the Central Division and lost to Oshawa in a five-game playoff series. Verhaeghe scored 2 goals with 2 assists and was an even plus/minus with 6 penalty minutes in the series. In seven games for Canada at the U18 WJC he had 4 assists and was +3 with 4 penalty minutes. Canada defeated the USA, 3-2, in the gold medal game. Verhaeghe was listed 102nd amongst North American skaters in Central Scouting’s final rankings and was selected by the Toronto Maple Leafs in the third round (82nd overall) of the 2013 NHL Draft.
2013-14: Verhaeghe signed a three-year entry-level contract with the Maple Leafs in April 2014 following his junior season with Niagara and made his pro debut — appearing in two games with the AHL’s Toronto Marlies. He had 1 assist and was +2 in two regular season games but did not play in any playoff games as the Marlies advanced to the second round. Verhaeghe led the IceDogs in scoring in his third OHL season. He scored 28 goals with a team-high 54 assists in 65 games and was -19 with 60 penalty minutes. Niagara finished fourth in the Central Division before taking eventual Eastern Conference champion North Bay to seven games in an opening round series. Verhaeghe scored 2 goals with 2 assists and was -1 with 6 penalty minutes; hampered by a lower body injury that was expected to keep him out of the entire series but forced him to miss just one game. Verhaeghe represented the OHL in the Subway Series against Russia in November and scored a goal in his only game.
Verhaeghe is creative with the puck, has good offensive instincts and is effective at taking faceoffs. On the development side, he needs to improve his skating and he does not always play with a consistent level of effort or intensity.
Verhaeghe was traded along with four other prospects by the Toronto Maple Leafs to the New York Islanders in exchange for Michael Grabner.