Unusual betting patterns on two Shanghai Masters qualifying matches played in Doncaster are to be examined by snooker's governing body.
Scot Ross Muir beat Thanawat Tirapongpaiboon, of Thailand, 5-0, while Egyptian Mohamed Khairy defeated Thai player Passakorn Suwannawat 5-4 at the Doncaster Dome on Wednesday.
"We are liaising with the Gambling Commission to establish the available facts about betting on these matches," said a World Professional Billiards and Snooker Association spokesman.
"A decision will then be made regarding whether any further action is necessary."
Several bookmakers suspended betting on the matches, which were in round one of qualifying, although there is no allegation of wrongdoing by the players at this stage.
"The WPBSA works with partners to monitor betting on snooker matches. As a result of this we were aware of the unusual betting patterns," added the spokesman.