2008-09: Cody Rosen appeared in 18 games for Kingston in the Ontario Junior Hockey League. He was 14-3-1 with 3 shutouts and had a 2.90 GAA and .899 save percentage. Rosen committed to playing college hockey at Clarkson in 2009-10.
2009-10: Rosen was the third goalie for Clarkson as a freshman behind sophomores Paul Karpowich (STL) and Richie LaVeau. In his only appearance of the season he allowed 3 goals on 16 shots in 20 minutes of action.
2010-11: Rosen appeared in three games for Clarkson as a sophomore behind starter Paul Karpowich. He made his only start in November and stopped 32 of 34 shots in a 2-1 loss to Air Force in the opening game of the Denver Cup. He stopped all 8 shots in a relief appearance against national champion Minnesota-Duluth and stopped 7 of 8 shots at Union in a pair of January appearances.
2011-12: Clarkson's third goalie behind seniors Paul Karpowich and Richie LaVeau, Rosen appeared in one game for the Golden Knights as a junior. He made his only start against Maine in the Florida Classic – stopping 15 of 19 shots before being pulled in the second period of a 6-1 loss.
2012-13: Rosen appeared in seven games for Clarkson in his senior season. With freshman Greg Lewis starting the bulk of the games for the Golden Knights, Rosen was 0-2 with a 2.89 goals against and .883 save percentage. He was not tendered a qualifying offer by the Islanders, becoming an unrestricted free agent
A small goaltender with good athletic ability. He does a nice job in covering the lower half of the net. Rosen has shown some very good poise as well. While he’s rebound control isn’t bad, it is an area where he can improve. Another area where Rosen can also improve is in the quickness of his lateral movement.
Rosen is starting his pro career in the ECHL with Knoxville, and will likely be a career minor league player, if that.