Dunn began his career icing for the Capital Centre Pride team at junior level in his home state of Michigan and in the 2000-01 season would feature in 31 games, helping out with 7 assists. Dunn would split his maiden season between the Pride and the Omaha Lancers of the United States Hockey League, a tier-1 junior team. Dunn would play in just seven games at this higher level, but coped well and managed to grab an assist during the brief spell.
He would continue to play for the Pride in the 2001-02 season, and it would prove to be a positive decision. Dunn's numbers rose dramatically, and in 55 games he scored 13 goals and totalled 24 assists as well as clocking up 169 penalty minutes, impressive numbers for a defenceman. Dunn would begin playing at NCAA level 1 for the season after, 2002-03, when he moved to Lake Superior State University.
In his four years at LSSU, Dunn would prove to be a cornerstone of the team, icing in 124 games. Dunn was mainly employed as a defensive minded defenceman though, and so point scoring oppportunities were limited for him. After leaving Lake Superior, Dunn signed for the ECHL Idaho Steelheads for the rest of the 2005-06 season, when he would play in nine games. He failed to score any points however, and so chose to move on to sign for the Odessa Jackalopes for the 2006-07 term.
Dunn enjoyed his first season in Odessa, totalling 24 points and 121 penalty minutes in 62 Central Hockey League games and for this performance, would win the club's 'Defenceman of the Year' honour. He was retained for the 2007-08 season, where his point production would again increase to 33. This helped Odessa into the post season, where Dunn would grab his first post-season points of his career.
During the summer of 2008, Dunn would make the decision to move to Europe, when along with Jackalopes team-mate Nathan Ward he would move to sign for the EIHL Manchester Phoenix, a team icing at the highest standard of ice hockey in Great Britain. Dunn will ice alongside fellow Michigan native Dwight Parrish in the Phoenix defence.
|2000-01||Capital Centre Pride||NAHL||31||0||7||7||88||-||-||-||-||-|
|2001-02||Capital Centre Pride||NAHL||55||15||24||39||169||-||-||-||-||-|
|2002-03||Lake Superior State University||NCAA||30||2||2||4||32||-||-||-||-||-|
|2003-04||Lake Superior State University||NCAA||33||5||3||8||50||-||-||-||-||-|
|2004-05||Lake Superior State University||NCAA||34||6||4||10||88||-||-||-||-||-|
|2005-06||Lake Superior State University||NCAA||23||3||4||7||36||-||-||-||-||-|