Educated at St Kentigan's College, Kershawl was recruited to the Crusaders Academy in Nelson before becoming a member of the Tasman Mako squad in 2020.
Sykes-Martin made his debut for Tasman in Round 1 of the 2020 Mitre 10 Cup against Counties Manukau at Pukekohe Stadium, coming off the bench in a 24-41 win for the Mako. He played another 2 matches for the side in 2020 as they went on to win their second premiership title in a row.
Sykes-Martin was called into the Crusaders squad during the 2023 Super Rugby Pacific season and made his debut for the side in Round 3 against the Drua
S.C March 2023
|2020 - present|
|2023 - present|