Career
Offerdahl was a Manly Sea Eagles junior before playing for the Easts Tigers in the Queensland Cup. He has also played for AS Carcassonne in the French Elite One Championship and Connecticut Wildcats in the AMNRL
In 2013, Offerdahl was named in the United States squad for the World Cup. Following the 2013 World Cup, Offerdahl signed for North Wales Crusaders.
He left the club mid-season to join Street George Illawarra Dragons, but failed to make an appearance in the NRL that season.
Offerdahl signed a 1 Year Deal with Championship side Bradford Bulls in 2015, but the deal was cancelled after he failed a medical. He signed with London Broncos for 2016.
Offerdahl qualifies to play for the United States of America through his father, who is from Madison, Wisconsin and served in the United States Armed Forces. Offerdahl represented United States of America in the 2013 Rugby League World Cup.
He was named captain of the United States of America prior to the 2017 Rugby League World Cup qualifying tournament.