• Umpires allegedly conspired with betting syndicates to cheat odds
• Guardian investigation forces tennis authorities to make bans public
• Questions over a $70m data deal inadvertently facilitating corruption
Two international tennis umpires have been secretly banned, while four others face being thrown out of the sport for life on charges of serious corruption, the Guardian can reveal.
Umpires from Kazakhstan, Turkey and Ukraine are among those alleged to have taken bribes from betting syndicates in exchange for manipulating live scores on the International Tennis Federation’s Futures Tour – which allowed crooked gamblers to place bets already knowing the outcome of the next point.