LONDON (AP) — Russian tennis star Nikolay Davydenko was cleared by the ATP on Friday after a yearlong investigation into suspicious betting patterns on a match he lost to a low-ranked opponent.

The governing body of men's tennis said it found no evidence of wrongdoing by Davydenko, opponent Martin Vassallo Arguello of Argentina or anyone else associated with their match in Sopot, Poland, on Aug. 2, 2007.

Davydenko, then ranked No. 5, pulled out of the match against the 87th-ranked Vassallo Arguello in the third set, citing a foot injury.

Betfair, an online bookmaker, voided all bets on the match. It received about $7 million in wagers on the match, 10 times the usual amount for a similar-level match. Most of the money was on Arguello, even after he lost the first set.