Hockey runs in Chychrun's family. His father, Jeff Chychrun, was a defenseman who played 262 NHL games for five teams from 1986-87 through 1993-94, and his uncle, Luke Richardson, also a defenseman, played 1,417 NHL games from 1987-88 through 2008-09.
Jakob Chychrun is also a defenseman, albeit with more offensive skills than his dad or uncle. After two seasons with Sarnia of the Ontario Hockey League, the Arizona Coyotes selected him in the first round (No. 16) of the 2016 NHL Draft. He made the Coyotes as an 18-year-old and scored his first NHL goal against Carey Price of the Montreal Canadiens on Oct. 20, 2016. Though the Coyotes failed to qualify for the Stanley Cup Playoffs, Chychrun had a solid first season, finishing with 20 points (seven goals, 13 assists) in 68 games.