Taken by St Kilda with pick 33 in the 2023 national draft, Hastie debuted in Round 3 of 2024 against Essendon and added 9 senior games in 2025. At 190cm the young defender can match up on tall or small forwards, a versatility the club values in its developing backline. Wearing No.24, he has played 21 AFL games and kicked 1 goal.