Sydney defender Tom McCartin remains "vibrant" despite suffering another concussion, says Swans coach Dean Cox.
McCartin will be out of action for at least this Saturday's clash against Port Adelaide after suffering a head knock in the club's two-point win over St Kilda on Sunday.
The 26-year-old had gone back with the flight of the ball in the third term and Saints small forward Liam Ryan cannoned into his back.
McCartin missed two games last season due to concussion, suffering a head knock in the club's round-18 win over St Kilda.
He missed a total of 15 weeks in the previous three seasons, first missing nine weeks in 2023, before spending four weeks on the sidelines in 2024.
McCartin's brother Paddy was forced to retire from the AFL two years ago because of concussion issues, while West Coast great Jeremy McGovern was medically retired by the league's concussion panel last year.
