Duo cleared after probe

Campbell beat Michie in the one-frame knockout tournament in Blackpool by 32 points to 21 with the unusually high numbers of bets on the match prompting the investigation.

A statement from the World Professional Billiards and Snooker Association said: "The WPBSA, working alongside the Gambling Commission, have completed a full investigation into suspicious betting patterns on a match at the World Snooker Shoot-Out between Jimmy Michie and Marcus Campbell on January 28th, 2011.

"The investigation has concluded that while there were irregular betting patterns on the match, there is currently no evidence to link the betting to either of the players involved. Therefore no regulatory action will be taken by the governing body against the players."