[1] He made his first-class debut for Barbados in the 2016–17 Regional Four Day Competition on 7 April 2017.
[2] In February 2020, in the 2019–20 West Indies Championship, he took his first five-wicket haul in first-class cricket.
[3] In June 2020, McSween was named as one of eleven reserve players in the West Indies' Test squad, for their series against England.
[4] The Test series was originally scheduled to start in May 2020, but was moved back to July 2020 due to the COVID-19 pandemic.
[5] In July 2020, he was named in the Jamaica Tallawahs squad for the 2020 Caribbean Premier League (CPL).