SOURCE: sport.guardian.co.uk

Investigators of match-fixing allegations surrounding Nikolay Davydenko and Martin Vassallo Arguello's Poland Open match in August have requisitioned the players' telephone and email records.

The news comes as Andy Murray was yesterday summoned to explain his comment that "all the players know it goes on".

"We have asked Andy Murray, through his agent, for a meeting as soon as possible to discuss the claims," said a spokesman for the men's ATP Tour.

"Nothing is more important than the integrity of our sport and the ATP has shown that it will act where it has information which requires investigation. Our anti-corruption programme has stringent procedures in place to deal with any suspected corruption."

The development in the Davydenko case took place as investigators attempt to trace a money trail. But they recognise there are limits to how effective their investigation might be since an approach to fix a match might be made through a player's entourage.

The next step for the ATP will be to appoint an official with experience of investigating corruption in sport to conduct a review of procedures and how these might be improved.

Lord Condon, who chairs the International Cricket Council's anti-corruption and security unit, and Paul Scotney, who heads the British Horseracing Authority's corruption investigations and has been involved in consultations with the ATP, are tipped to be candidates to run the organization.

The ATP has joined forces with the women's WTA Tour, the Grand Slam Committee and the International Tennis Federation to set up a joint body tackling corruption.

The unit will provide a unified code of conduct to replace the organizations' current individual regulations.