Michigan-born Flanker Mike Gieselman currently represents the Seattle Seawolves in Major League Rugby. Gieselman also represented the Utah Warriors from 2021-2022, having played with the Warrior Selects academy side during the fall of 2020.

To date, Gieselman has earned 26 MLR caps, the majority of which (22) coming as a finisher. During the 2022 season, Gieselman gained 173m on 31 ball carries, and made 59/68 tackles for a success rate of 86.76%.

On August 4th, 2022, it was announced that Mike Gieselman had been traded from the Utah Warriors to the Seattle Seawolves, in exchange for Salary Cap Considerations in 2023.