The full span of Harris' first-class cricket career was from 1870 to 1911, at 42 seasons one of the longest on record, though he made only seven appearances after 1889 when he relinquished the Kent captaincy so his essential playing career was from 1870 to 1889. He appeared in 224 first-class matches, including four Test matches, as a righthanded batsman who bowled right arm fast with a roundarm action. He scored 9,990 runs in first-class cricket with a highest score of 176 among eleven centuries and held 190 catches. He took 75 wickets with a best analysis of five for 57. Even in old age he was a capable cricketer, scoring a fifty for I Zingari v West Kent in his 71st year and 25 against Philadelphia Pilgrims at Lord's, 53 years after he had made his first appearance at the home of cricket.