Suspended jockey Danny Nikolic reportedly had an online account run by a third party to win $60,000 on at least one allegedly fixed horse race in 2011.
Forensic analysis of the account registered to a person in Queensland revealed it was used by Nikolic to hide his betting activities, Fairfax reports.
The revelation follows the Victorian government agreeing in principle to introduce new laws and reforms as part of a major overhaul of racing called for by the sports watchdog, Racing Integrity Commissioner Sal Perna.
On Wednesday Mr Perna said he could find no proof of systemic race fixing in Victoria but he lacked many of the powers needed to find such evidence if it existed.
The inquiry, which had no powers to compel anyone to give evidence, relied on information offered voluntarily.
Despite his conclusion that Victorian racing is free of endemic race-fixing, Mr Perna made 11 recommendations, mostly relating to the need for the industry to have greater coercive powers and for the introduction of legislation to enable police to share information with racing authorities.
Last year, Nikolic was disqualified for two years for threatening chief steward Terry Bailey. He lost an appeal and is yet to be resentenced.