Mikkelson plays for the New Zealand national rugby sevens team and is the most capped player in the team's history, surpassing former captain DJ Forbes record when he played his 90th tournament in Los Angeles in 2020. Mikkelson was then named player of the tournament for the 2013 Rugby Sevens World Cup and also received IRB Sevens Player of the Year for the 2012–13 season.[1][2]
Mikkelson has scored more than 200 career tries for New Zealand in the World Rugby Sevens Series, putting him third on the all-time try scorers list in that competition.[3]
Mikkelson has also played rugby for the Chiefs and for Waikato.