 In 2009 he scored 390 runs in a single innings, surpassing several South African and international first-class cricket records, and was included in the South Africa A squad.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.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.