France's Clement claims he was asked to lose on purpose

Tennis has been hounded by match-fixing rumors since Betfair, in an unprecedented move, voided bets on a match in Poland after fourth-ranked Nikolay Davydenko withdrew against 87th-ranked Martin Vassallo Arguello in the third set because of a foot injury. The ATP is still looking into that match.

"It's quite a different scenario to the Davydenko thing," Murdock said of the Tursunov investigation. "We're not really seeing it as a potential match-fixing problem -- if there is indeed a problem."

In response to both the Davydenko match and other players speaking out about being approached by outsiders trying to influence a match, the ATP and other tennis governing bodies have been working together to keep the sport clean.

At the Paris Masters, which started on Sunday, local officials are looking out for anything strange.

"You have to be very attentive and very severe," French tennis federation president Christian Bimes said. "I hope there is the same severity shown as for doping."

FFT director general Jean-Francois Vilotte said the police could be called in if there was a questionable match.

"They are the only ones capable of putting together a certain amount of investigative measures that the FFT is unable to do," Vilotte said.