Career
He also played for the Gold Coast Titans in the NRL. His position of choice is on the wing. After playing for the Belmont Steelers, a Western Australian feeder club for the North Queensland Cowboys, Petersen was called up to the NRL in 2002. Petersen moved from the Cowboys to the Parramatta Eels half way through 2002 and played for the Eels with some success until 2006.
Petersen equalled the club try-scoring record for one match during the 2003 round 12 clash against the South Sydney Rabbitohs.
Scoring four tries in the one game, he was the first Eel to have done so since 1988. Eels care-taker coach, Jason Taylor, dropped Petersen from the first-grade roster when he took over coaching duties in May, 2006, and demoted the under-performing winger to the Premier League, where he spent the rest of the season.
"Side-Show Bob" joined the Titans in 2007 for their first year in the NRL. He performed well and was well known as "Sideshow Bob" due to his thick, curly hair. He ended the season with the most tries scored, shared with Mat Rogers.
At the end of 2007 he played for America.
In May, 2008, he was given an immediate release to join Super league side Wakefield Trinity Wildcats. As of 2012, he currently plays rugby league in Gympie. Representative career
In 2004, Petersen played a game for the United States against Australia in an exhibition match in Philadelphia, qualifying for the American side under the parent rule.
In 2007, Petersen was named as captain of the United States of America team for their 2008 Rugby League World Cup qualifying match against Samoa.
He was awarded Manitoba of the Match for the game, but could not stop the United States of America falling to defeat. Petersen made a comeback in 2013, being named as part of the United States of America squad for the 2013 Rugby League World Cup.
First Grade Début: 2002 - Round 1, North Queensland v Brisbane at Dairy Farmers Stadium, 16 March
International: 2004 - United States vs Australia, scoring one try.