New York native Mike St. Claire played in Major League Rugby between 2019-2020. He represented Rugby United New York for his entire MLR career.

A native of Medford, NY, Mike St. Claire played his amateur rugby with Long Island RFC as well as Old Blue in the ARP, and attended Stony Brook University where he played with the Seawolves (not to be confused with the Seattle MLR side). He signed with his local MLR side Rugby United New York for their inaugural season in 2019, scoring 3 tries in 11 games (8 starts) and gaining just shy of 500m in possession, while completing over 50 tackles. St. Claire returned for the 2020 season, but only appeared in 1 game before the COVID-19 pandemic shut the season down after 5 rounds.

He earned his international sevens debut for Jamaica in 2019 in the World Rugby 7s Challenger Series, and has regularly represented Jamaica at 7s level including at the 2022 Commonwealth Games, and continues to play with Old Blue in the ARP.