Andy Murray Tuesday urged tennis authorities to be proactive in the fight against corruption after match-fixing claims hit the sport - and blasted a betting company's sponsorship of the Australian Open. After the BBC and BuzzFeed reported top players, including Grand Slam title-winners, were suspected of match-fixing but never punished, Murray said the fight against corruption must be transparent. "If there is corruption in any sport, you know, you want to hear about it," said the world number two, after beating Alexander Zverev in the Australian Open first round. "As a player you just want to be made aware of everything that's going on. I think we deserve to know everything that's sort of out there," he added. "Some of it will be true, some of it might not be true. But I'm always very curious with that stuff across really all sports, as well. I think sports could in general be much, much more transparent." The controversy is just the latest to hit the sports world, after allegations of doping cover-ups rocked athletics and football body FIFA was engulfed by a string of corruption scandals.