2007-08: Trevor van Riemsdyk played for Christian Brothers Academy HS in New Jersey in his junior season.
2008-09: van Riemsdyk was the leading scorer for CBA from his defense spot in his senior season as the Colts reached the New Jersey non-public school state championship against perennial power Delbarton. He scored 11 goals with 47 assists in 29 games.
2009-10: van Riemsdyk skated for the New Hampshire Junior Monarchs in the Eastern Junior Hockey League. He scored 8 goals with 27 assists and 4 penalty minutes in 31 regular season games and had 3 assists in four playoff games. In January he committed to playing college hockey at the University of New Hampshire in 2011-12.
2010-11: van Riemsdyk was the leading scorer amongst Junior Monarchs' defensemen in his second EJHL season with New Hampshire. In 39 regular season games, he scored 16 goals with 22 assists and had 20 penalty minutes. The Junior Monarchs finished first in the Northern Division. van Riemsdyk scored 2 goals with 3 assists and 4 penalty minutes in six playoff games.
2011-12: van Riemsdyk skated in all 37 games for the University of New Hampshire as a freshman and was the top scoring defenseman for the Wildcats. He scored 4 goals with 15 assists and was +7 with 24 penalty minutes. UNH finished sixth in Hockey East. The Wildcats lost to third-place Boston University in a three-game Hockey East quarterfinal series – with two of the games going to double overtime.
2012-13: van Riemsdyk attended the Flyers prospect camp in July before returning the University of New Hampshire for his sophomore season. He was the second-leading scorer for the Wildcats behind forward Kevin Goumas, finishing with 8 goals and 25 assists, and was +10 with 8 penalty minutes in 39 games. UNH reached the NCAA Northeast Regional final after finishing in a three-way tie for third in Hockey East; falling to Massachusetts-Lowell, 2-0, after defeating Denver 5-2 the previous evening.
2013-14: van Reimsdyk turned pro following his junior season of college hockey — joining the AHL's Rockford IceHogs after New Hampshire did not receive an NCAA Tournament bid. He was the third-leading scorer amongst Wildcats' defensemen on a team that featured four defensemen with 20 or more points. van Riemsdyk scored 4 goals with 19 assists and was +13 with 10 penalty minutes in 26 games. UNH defeated Providence, 3-1, to reach the Hockey East finals but did not receive an NCAA at-large bid after losing to Lowell in the championship game. van Riemsdyk signed a two-year, entry-level contract with Chicago as a free agent on March 24th, 2014.
Chicago signed van Riemsdyk, younger brother of Toronto's James van Riemsdyk, to a two-year entry-level contract on March 24th, 2014.