2008-09: Petersen posted 37 goals, 53 assists in 68 games as a 19-year-old player for the Shawinigan Cataractes.
2009-10: As an overage player with the Saint John Sea Dogs, Petersen managed 39 goals and 40 assists in 59 games. He was also an impressive plus-46. In the playoffs he would go on to post 7 goals and 21 assists in 21 games.
2010-11: As a rookie pro, Petersen posted 24 goals and 33 assists in only 40 ECHL games before earning a callup to the AHL. With the Penguins AHL affiliate, Petersen managed 5 goals and 9 assists in 23 games.
Peterson is a left-handed winger who plays an offensively robust style of game. An above average puck-distributor and okay skater, Peterson’s best attribute is his ability to put the puck in the net – particularly off the cycle. The 20-year-old needs to work on his acceleration however if he hopes to maximize his skating ability. Although he does a good job of utilizing his frame to protect the puck, he also needs to play a more physically robust game for a person of his size.