John signed as an undrafted free agent with the New Jersey Devils organization after a stellar career at the University of Michigan, where he was a part of three CCHA Championship teams, including the 1996 National Champion squad.
After joining the New Jersey organization in 1997-98, John quickly became renowned for his tenacious play and defensive prowess. He would go on to have an 898 game NHL career with New Jersey, Chicago, Minnesota, and Florida, winning three Stanley Cups (’00, ’03, ’10) and the Frank J. Selke Trophy in 2001 as the top defensive forward in the NHL.
John retired from playing in 2012. He currently serves as Head Coach with the Cleveland Monsters of the AHL.