After attending Auckland Grammar School, Lusk studied law. He was admitted to the Bar in 1890. He made his first-class cricket debut for Auckland in 1889-90, playing five matches as a middle-order batsman and opening bowler. He had little success with the bat, but took eight wickets in two matches against the touring New South Wales team, including figures of 5 for 35 in the first match. He moved to Napier, and began playing for Hawke's Bay in 1891-92. In his first match he top-scored with 62 in an innings victory over Taranaki. He was selected for North Island against New South Wales in 1893-94, second-top-scoring in each innings with 39 and 21. Now captaining Hawke's Bay, he played a leading part in the match against Wellington in 1895-96, making 14 and 41 and taking 4 for 18 and 7 for 53. He made his debut for New Zealand in 1896-97, making 59 and 23 in a victory over Queensland. He was the only Hawke's Bay player to represent New Zealand during Hawke's Bay's period as a first-class side. With 250 runs at an average of 31.25, he was the highest-scoring New Zealand batsman of the season. In the first match the next season Lusk scored his and Hawke's Bay's first century, 119 in a loss to Canterbury. It was the highest score of the season, and again he topped the national run tally, this time with 280 runs at 40.00. He went on New Zealand'sshorttour of Australia in 1898-99, but had little success in the two first-class games. In 1900-01 he scored his second century, 120, when he led Hawke's Bay to an innings victory over Auckland. He played for New Zealand against Lord Hawke's XI in 1902-03. He scored his third and final century against Wellington in 1907-08. He played his last first-class match, still as captain of Hawke's Bay, in 1909, just before his 43rd birthday. In all 28 first-class matches for Hawke's Bay he scored 1395 runs at 28.46. His wife Elizabeth was a daughter of William Lee Rees and a niece of W. G. Grace. Lusk became Crown Solicitor for Hawke's Bay in 1902, succeeding another cricketer, Arthur Cotterill. He retained the position until his death.
