Venables originally represented Keilor Football Club and his schoolPenleigh and Essendon Grammar. Throughout his junior career, he mainly played as a midfielder or forward. In 2015, he played for Vic Metro in the 2015 under-16 national championships, breaking his leg against South Australia in the opening game after landing awkwardly in a marking contest. The same year, Venables had surgery on his shoulder. In 2016, he was named in the under-18 All-Australian side after a strong performance for Vic Metro in the national championships. Venables kicked six goals over four matches while averaging 13 disposals, 5.5 tackles and 6.3 contested possessions. He played three TAC Cup games for the Western Jets, limited by school football duties. Venables was unable to test at the AFL Draft Combine due to a foot injury, but was still considered a likely first-round pick at the upcoming 2016 national draft.
AFL career
Venables was drafted by West Coast with their first selection and thirteenth overall in the 2016 national draft. His foot injury prevented him from participating in the 2017 preseason, but he recovered in time for a March reverses match with West Coast's West Australian Football League affiliate East Perth. At the start of the 2017 WAFL season, Venables was restricted to reserves matches on limited minutes, but built up form and played eight league games, averaging over one goal and 13 disposals. He was about to play his first AFL match against the Geelong Cats in round 13, but suffered turf toe in training, ruling him out for the season. Nevertheless, Venables extended his contract in July by two years. He made his debut in the opening round of the 2018 AFL season in a twenty-nine point loss to at Perth Stadium. Venables played four games before injuring his ankle against Gold Coast. He was kept out for two months, and played another eight games before his first AFL final against Collingwood, where he recorded seven tackles. Venables impressed against Melbourne in the preliminary final, accumulating 17 disposals and kicking a goal. He was part of West Coast's premiership side, but had little impact on the Grand Final, recording only three disposals. During the 2019 season, he suffered a severe head concussion and has been ruled out of Australian Football League for the rest of his career.
