Newnes made his debut in Round 2 of the 2012 season against Gold Coast.[2][3] After seven games in his debut season, he became a mainstay of the senior team for the rest of his time at St Kilda. He played a club equal-record 123 consecutive senior games from 2014 to 2019[4] and was a member of the club's leadership group for four seasons from 2015 until 2018. He played primarily as a wingman or utility flanker, noted for his effective link play and accurate field kicking.[5] Despite still playing 20 out of 22 games in the season, Newnes turned down a two-year contract and asked to be delisted at the conclusion of the 2019 AFL season in order to join Carlton.[6][7]
Newnes then joined Carlton, signing as a delisted free agent, from the 2020 season.[8] He became a mainstay of the Carlton team in the pandemic-interrupted season as a wing/half-back, playing all 17 games. In Round 12, 2020, he kicked a goal after the siren to win the game by four points against Fremantle at Optus Stadium: the high difficulty kick, which came from outside the right boundary line at the 50-metre arc and required him to shoo away a cameraman and move camera cables out of his run-up, was one of three finalists for the AFL Goal of the Year award.[9] He played 19 games in 2021, reducing to 16 games in 2022 for a total of 52 for the club; he was delisted at the conclusion of the 2022 AFL season.[10]
AFL statistics
Statistics are correct to the end of round 18, 2020[11]