Clark is a right-handed batsman who bowls right-arm medium pace, and occasionally fields as a wicket-keeper.
[1] At the start of the 2011 season, Clark's scholarship was renewed[9] and, in June, he made his Twenty20 debut.
[11] On 24 April 2013 in a second XI game for Lancashire against Yorkshire at North Marine Road Ground, Scarborough, he became only the fifth player to hit six sixes off an over in a professional game, scoring the runs against left-arm spinner Gurman Randhawa.
[12] On 22 July 2018, Clark removed England captain Joe Root, New Zealand captain Kane Williamson, and England batsman Jonny Bairstow in consecutive balls to secure a hat-trick in the County Championship roses match against Yorkshire.
[14] Having scored more than 5,000 runs and taken over 150 wickets for Lancashire, he moved to Surrey in 2019,[15] and was described as the "underestimated lynchpin" of the side that won back-to-back County Championship titles in 2022 and 2023.