Chalk made 1,000 runs both seasons he was captain of Kent and was described as "skilful" in defence, with the ability to score effectively and field well. He scored five centuries for Kent, with his highest score of 198 being made at Tonbridge against Sussex in 1939. He was considered an "excellent captain in the field" who was effective at managing his bowling attack and who was aggressive in pursuing victories. In 1939 he promoted fast scoring bowler Alan Watt to bat alongside Arthur Fagg in Kent's second innings at Colchester. Fagg scored a double century in both innings of the match, the only time this has been achieved in first-class cricket. He scored a century in the penultimate match of Kent's 1939 season in August against Yorkshire at Dover, carrying his bat through Kent's first innings against Hedley Verity's bowling, and played his final first-class match against Lancashire later the same month.