Collingwood's All-Australian defender Darcy Moore is reportedly battling with an Achilles tendon issue and is believed to be playing through "significant discomfort", according to Fox Sports' Tom Morris.
Morris has reported that Moore was dealing with the complaint prior to Round 1 and has looked to push through the pain to play in the black and white.
It is understood that Collingwood have placed Moore under a personalised training regime that has aided his workload.
However, the 25-year-old is believed to have been in further discomfort during Saturday night's loss to Greater Western Sydney, prompting further concerns for the Magpies star.
Morris has reported that Moore is opting to play on despite the injury, which could require surgery and therefore end his campaign.
The news is an astonishing update for the Collingwood key-defender, who has been in All-Australian form in 2021.
Most intercepts in a game
24 - Scott Thompson (2012)
21 - Jeremy McGovern (2016)
20 - Tom Langdon (2018), Martin Pike (2004)
19 - Harry Taylor (2010)
18 - DARCY MOORE (2021), Chad Cornes (2002)
— Swamp (@sirswampthing) March 25, 2021
Moore might be forced onto the sidelines in the near future as he is likely to require rest on the injury at some stage of the season.
The setback adds further turmoil for the club, who have lost Taylor Adams to a knee injury for the next 10 weeks.