DOB: 12 November 1999
Debut: Round 15, 2018 vs St Kilda at MCG
From: Wudinna United/Rostrevor College/Norwood, selection #37, 2016 National Draft
Number: 35 (2018-)
Honours:
Premiership player - 2021
Games: 82* (to end 2024)
Goals: 28*
Career statistics
| Wins | Draws | Losses | Winning % |
| 36 | 1 | 25 | 54.87 |
Tall defender who was MVP for South Australia and an All-Australian in the 2017 Under 18 carnival. Played Under 19s and Reserves with Norwood before being drafted. Appeared in one game in his first season, and spent the rest of the year developing in the VFL with Casey Demons.
After five games in defence during 2019 a key position forward crisis saw Petty sent forward for the first time in his career. He kicked three goals in his first game forward, and three more in the next four weeks before injury kept him out of the last two games. He was troubled by groin issues in 2020 that required surgery, putting him out for the season. Regardless, he received a two year contract extension at the end of the season.
Petty started 2021 in Melbourne's reserves side, before being recalled after a season-ending knee injury to Adam Tomlinson. He impressed for the remainder of the year, playing a key role in the toughest defence in the competition. He ended his season playing in a Grand Final victory. His 2022 season was delayed by a calf injury, not returning to the side until Round 5. From there he was a key pillar in the league's best backline, holding his spot through to the end of the season. In Round 23 he was involved in a controversy when he became visibly emotional after a confrontation with Brisbane captain Dayne Zorko.
After starting 2023 in defence, he was used as a forward again, before a foot injury in the Round 9 game against Hawthorn cost him several weeks. He went forward again in Round 20 and kicked a career best six goals, before another foot injury the following week ended his season. Petty returned to the forward line early in 2024 but struggled for goals, kicking just nine in 20 games. In 2025 Petty returned to defence.
| Year | Games | Goals | Brownlow |
| 2018 | 1 | 0 | 0 |
| 2019 | 10 | 6 | 0 |
| 2021 | 19 | 0 | 0 |
| 2022 | 18 | 1 | 0 |
| 2023 | 14 | 12 | 2 |
| 2024 | 20 | 9 | 3 |
Tribunal record
| Match | Charge | Sanction | |
| Round 15, 2024 | Engaging in a melee | $1875 fine | |
| Round 22, 2024 | Engaging in a melee | $3125 fine | |
Lists
Interstate recruits
Links
Demonwiki image gallery
SANFL.com.au draft preview
Wikipedia profile