Career
He is currently playing with the London Knights of the Ontario Hockey League (OHL). Tkachuk is a top rated prospect who is projected to be a possible Top 5 pick at the 2016 National Hockey League Entry Draft. Playing Major junior
On May 8, 2015, Tkachuk gave up his National Collegiate Athletic Association eligibility when he signed with the London Knights of the Ontario Hockey League (OHL), who had drafted him in the 4th round of the 2013 OHL Priority Selection.
Playing on a line with Mitch Marner and Christian Dvorak, Tkachuk scored 107 points placing him 5th in OHL scoring.
At the 2016 IIHF World Junior Championships held in Helsinki, Tkachuk and Auston Matthews each scored 11 points to lead the American team in scoring. After losing in the semifinals, the American team beat Sweden to claim the bronze medal.