Racing Victoria chief steward Terry Bailey admits the issue of jockey changes on horses in feature races favours jockeys.
His comments came after he confirmed Damien Oliver had applied for a share of earnings from the Luca Cumani trained My Quest For Peace after being dumped from the horse for Saturday's Caulfield Cup by senior part-owner Terry Henderson.
Oliver was sacked in favour of Corey Brown after it was revealed in last week's ''The Sunday Age'' newspaper that the champion jockey had placed a winning $10,000 bet on a rival horse in a race in which he was riding in October, 2010.
The four-time Caulfield Cup and dual Melbourne Cup winning jockey shrugged off the controversy on Wednesday when he rode the Leon Corstens-trained Commanding Jewel to victory in the Group One Thousand Guineas.
After the race Oliver made a point of thanking Corstens for remaining loyal while criticising those that had dumped him.
However, despite also being sacked by powerful owner Lloyd Williams as the rider on Green Moon in Saturday week's Cox Plate, Oliver has not made a similar application to stewards in relation to that horse.
Bailey, speaking on Melbourne racing radio station RSN on Thursday morning, said Oliver had applied for either the winning or losing percentage on My Quest For Peace in both the Caulfield and Melbourne Cups.
He said from interviews with Henderson and Oliver so far that it appeared the owners had made 'a firm commitment' to Oliver riding the horse in the Caulfield Cup but not in the Melbourne Cup.
He said stewards would decide on Oliver's bid for a percentage of any money won by My Quest For Peace in the Caulfield Cup before Saturday's race.
The winner of the $2.5 million Caulfield Cup will receive $1.5 million on Saturday with the winning jockey entitled to five percent of that - a total of $75,000 - while even the eighth-placed horse will win $75,000 of which the jockey percentage is $3750.
However, Bailey admitted that the issue of switching jockeys in big races was not a level playing field as far as owners and jockeys are concerned.
"It is one-way traffic (in favour of the jockeys)," he said.
"Riders get off horses all the time and when that happens owners are hamstrung because why would you force a rider to ride your horse when he doesn't want to. But when it's the other way around, it's not as clear cut."
Bailey also confirmed an investigation was ongoing into allegations that Oliver placed a winning bet of $10,000 on rival horse and even-money favourite Miss Octopussy in a race at Moonee Valley in October 2010, a race in which Oliver was riding second favourite Europa Point.