He is a right-handed opening batsman and very occasional right-arm medium bowler who initially played for Gauteng following his debut in 2001, and since 2004 for Lions.
[2][3] Cook holds the record highest score in South African first-class cricket – 390 from 648 balls on 25 October 2009 against the Warriors – which was also the team's first triple century.
[4][5] Cook had previously been a spectator to his father's own 313 and Daryll Cullinan's previous-record 337, and commented later that "When my brother and I used to play cricket in the garden, there was one score neither of us could ever go past and that was dad's.
"[6] Cook's score is also the twelfth-highest and fourth-longest in first-class cricket history – taking over 14 hours to complete – and was part of a record-breaking 365-run partnership with Thami Tsolekile, also a record for South African first-class cricket.
[8][9] Cook was the first South African to face the pink ball as well as the first ever delivery in a day-night Test match and coincidentally his father Jimmy Cook was also the first ever South African to have faced the white ball in an ODI.