Sydney forward Ben McGlynn faces an uphill battle to play in the Swans' finals campaign after scans confirmed he suffered a minor hamstring strain during Saturday's qualifying final victory over Adelaide.
McGlynn was substituted during the third term of the win over the Crows and looked shattered on the bench as he watched his side book their spot in the preliminary final.
Swans doctor Nathan Gibbs said the injury would require two to three weeks rehabilitation, meaning the former Hawk could still feature in the grand final if the Swans make it.
"The scans showed Ben had only a little inflammation inside the muscle, which is a positive sign," he said.
"We will work with Ben and hope to get him up and running again this season."
McGlynn has only missed one game this year and is the Swans' joint third highest goalscorer.