Collingwood defender Jackson Ramsay has been sent to have his knee examined after hurting it at training on Thursday morning.
The Magpies remain uncertain as to the extent of the injury, but expect to know how serious it is later this afternoon.
Ramsay left the track after going down in a tackle and went inside the club before being sent for scans.
The 21-year-old played his best game for the club on Friday night against Richmond and finally looked to be cementing his place in the team after a frustrating run with injury.
Ramsay received a coaches' vote after picking up 23 disposals and taking seven marks against the Tigers. He was also influential in the final desperate minutes of the game, which Collingwood won with a goal inside the last minute.
Ramsay, the No.38 pick in the 2012 NAB AFL Draft, played the first five games last season before a shin injury kept him sidelined for the rest of the year.
Collingwood's depth has been tested in recent weeks with Dane Swan suffering a season-ending injury, Travis Varcoe sidelined with a hamstring injury, Jamie Elliott not expected to return from a back injury until at least mid-season, and Steele Sidebottom being suspended.
Jackson Ramsay leaves training early on Thursday after appearing to injure his knee.
Jackson Ramsay sent for scans
Jackson Ramsay has been sent for scans after appearing to injury his knee during Collingwood's Thursday training session at the Holden Centre.