Drafting and First Season (2019) Wilkie was selected by St Kilda with pick 3 in the
2018 rookie draft. Of his drafting, Wilkie spoke of how he quit his full-time accountacy job on Friday afternoon and was in Melbourne by Sunday:“Everyone was packing up when the Rookie Draft started because it was about five o’clock on a Friday and I was packing up as well. Then Chris Toce messaged me asking if I was watching this. I was planning on going home and then watching it there but it started early. I flicked on the live tracker and the Saints were the next pick, so I thought that it was weird he was texting me. Then I refreshed it and it was up to Pick 8 and I had been taken and he called me straight away. As soon as I got that call I left the room so I wouldn’t have to take that call in front of people. It was an unbelievable call. When I came back through they were all waiting for me. It was a pretty amazing time. I cleaned out my desk on the Saturday and then came here on the Sunday. It all happened pretty fast.” After debuting in the opening round of the 2019 season and showing strong form in the next three matches, Wilkie signed a contract extension with St Kilda to the end of 2021. Wilkie's showed great promise and immediate AFL competency playing on some of the game's stars in the early part of 2019, including
Jake Stringer,
Jesse Hogan,
Cam McCarthy,
Jarryd Roughead and
Jack Gunston.
2020 Wilkie played all 19 possible games in 2020, including two finals and made another top 10 for the Trevor Barker Award, finishing seventh for a second consecutive year with 113 votes. Wilkie averaged 13 disposals, eight effective kicks, four rebound-50s, three spoils a game in 2020. He finished the season first for St Kilda's rebound-50s and effective kicks, second for one-percenters and spoils, third for intercept marks. His best game for the year came in Round 10 against Gold Coast where he gathered 18 disposals, six marks (three contested), four rebound-50s and four one-percenters. Wilkie's rebounding numbers were also elite for the AFL.
2021 Wilkie extended his contract by a further two years at the beginning of the 2021 season. Wilkie was also voted into the Saints' leadership group for the 2021 season, for the first time. In May, Wilkie was ranked second in the AFL's as a defender in a direct contest, with a contest win percentage of 59.1%, behind only
Ryan Lester with 61.9% Wilkie had a dominant defensive game in Round 21; playing on Sydney syperstar
Lance Franklin, Wilkie kept Franklin to just one goal from four kicks and zero marks. Wilkie also had 16 disposals of his own, setting up a number of attacking plays. Wilkie finished fourth in the Trevor Barker Award, his third consecutive top-10 finish. ==Statistics==