Wests Tigers centre Tim Simona has been deregistered by Australia's National Rugby League for a range of gambling-related rule breaches, including betting against his team winning and on opposition players scoring against his club.
The NRL said the 25-year-old Simona also lied when interviewed by the NRL's integrity unit, and didn't pass on jersey auction proceeds to charities.
"Based on the evidence we have identified it is very hard to imagine that Tim Simona will be registered with the NRL at any time in the future," NRL chief executive Todd Greenberg said in a statement.
"There is nothing more important than the integrity of our game.
"Our fans have a right to expect that every player on every team is doing his best to win each game and we will be relentless in dealing with anyone who attempts to breach this trust."
The NRL, which could ban Simona for life, has not released specific details of Simona's actions. But text messages sent by Simona indicated he knew his behaviour was in breach of the rules, Greenberg said.
"At the end of the day, he has deliberately flouted the laws of the game for his own gain and there is no place for him in the NRL.
"This is a warning to everyone in our game that if you try to meddle with the integrity of the game you will be caught and the consequences will be harsh."
Greenberg said Simona was remorseful and had been dealing with serious personal issues.
The investigation into Simona's actions, which also involves New South Wales state police, led to him being suspended from playing and training last month.