Selected by the Islanders in the first round, 15th overall, of the 2013 National Hockey League Draft.
Scored a career-high 63 points (23g/40a) in 66 games during his fourth season with the Brandon Wheat Kings of the Western Hockey League... Named to the WHL East First All-Star Team...Finished second among WHL defensemen in goals and fourth in points...Ranked second on the team in points...Tied for the team lead with 14 power-play goals...Scored four points (2g/2a) with a plus-5 rating in nine playoff games...Reassigned to the Bridgeport Sound Tigers of the American Hockey League on Apr. 13...Made his professional and AHL debut on Apr. 14 vs. Adirondack.
Tied for the team scoring lead with 45 points (14g/31a) in 61 games during his third season with Brandon (WHL)...Served as team captain...Tied for 13th in scoring among WHL defensemen...Named to the WHL East First All-Star Team. 2011-12:
Established career highs in goals (19), assists (41), points (60) and plus-minus rating (+33) during his second season with Brandon (WHL)...Finished fifth on the team in scoring and first among defensemen...Selected to the WHL Eastern Conference First All-Star Team...Scored five points (3g/2a) in nine postseason games, ranking fourth on the club and first among defensemen in scoring...Won a bronze medal with Team Canada at the 2012 Under-18 World Junior Championships in the Czech Republic. 2010-11:
Led Brandon defensemen in scoring with 42 points (8g/34a) in 63 games as a WHL rookie...Made his WHL Playoffs debut, leading Brandon defensemen with six points (2g/4a) in six games.