Collingwood forward Jaidyn Stephenson faces of a lengthy AFL ban for gambling, in a massive blow to his club's premiership aspirations.
The dynamic Magpies forward allegedly placed a bet of less than $50 on a game he played in this season.
The last player found guilty of such an offence - GWS's former Collingwood defender Heath Shaw - was suspended by the AFL for eight games.
The third-placed Magpies have 10 games remaining this season before a finals campaign in which they're among the flag favourites.
Stephenson is a key contributor for Collingwood, with 21 goals from his dozen games this season.
AFL chief executive Gillon McLachlan has refused to comment on the matter.
"I'm not going to make any comment about anything that may or not be before the integrity department," McLachlan told reporters on Tuesday.
Stephenson was the AFL's Rising Star last season when, in his debut year, he booted 38 goals and was a member of the Magpies who were beaten by West Coast in the grand final.
The Stephenson investigation continues a string of betting-related incidents at Collingwood.
Eight years ago, Shaw was banned and fined $20,000 for betting on his then-Collingwood skipper Nick Maxwell to kick the first goal of a game.
Shaw and a mate bet $10 each on Maxwell, who usually played in defence, kicking the opening goal of the round 10 game against Adelaide, knowing his captain would start the game in the the forward line.
Maxwell didn't place a bet but was hit with a $10,000 fine, with half that amount suspended, after some family members placed bets on him being the first goalkicker.
In March last year, Collingwood's Brayden Sier was given a suspended $5000 fine by the AFL after placing bets totalling less than $50 during the 2017 season. None of the bets involved matches the Magpies played in.
In 2017, Melbourne forward Jake Melksham was fined $10,000 by the league for misleading AFL investigators during an inquiry into activity on his betting account.
In March 2015, another Collingwood player, Jack Crisp, was fined $5000 by the governing body for bets totalling $129 on AFL markets while at his former club Brisbane in the 2014 season.
And in 2011, Essendon assistant coach Dean Wallis was banned by the league for 14 games for betting on three AFL games.
Australian Associated Press