Tennis officials have rejected allegations evidence of match fixing has been hidden.
It comes after a BBC and BuzzFeed report revealed that over the last decade, 16 tennis players in the top 50 have been repeatedly flagged to the worldwide Tennis Integrity Unit (TIU) over suspicions of match fixing.
The BBC says all of the flagged players were allowed to continue competing.
The Association of Tennis Professionals (ATP) chairman Chris Kermode rejected the allegations.
KERMODE 1
The Tennis Integrity Unit and the tennis authorities absolutely reject any suggestion that evidence of match fixing has been suppressed for any reason or hasnt been thoroughly investigated.
The TIU anti-corruption unit was established in 2008 with authorities funding 14 million US dollars of programs tackling betting scandals and all forms of corruption.
TIU Director Nigel Willerton says tracking controls are placed onto the players personal devices.
