The Australian division of UK bookmaker William Hill says its Australian Open betting turnover is up 80% despite a match-fixing controversy.

On Tuesday, William Hill Australia reported that its betting turnover on the first day of the Australian Open tennis meet is up 80% from the first day of 2015’s tournament, while in-play wagers are up 297% (the latter stat undoubtedly aided by Hills’ new in-play app).

Hills paid a reputed $5m to become the Open’s first betting sponsor but the timing has proven awkward. The Open’s first day saw the release of a joint investigation by the BBC and BuzzFeed News that claimed the tennis world’s match-fixing problem was far greater than originally suspected.

Hills’ courtside ads drew a public rebuke on Monday from the sport’s top-two ranked players. Andy Murray said he found the ads “a little bit hypocritical” and wondered why tournaments were allowed betting sponsorships while individual players were prohibited from entering into such arrangements.