Rafael Nadal has slammed the Association of Tennis Professionals for covering up Andre Agassi's use of banned drugs.
The eight-times Grand Slam winner has admitted in his autobiography that he lied about using crystal meth to the ATP in 1997 to avoid a suspension.
When asked about his views on the matter, Nadal said: "If the ATP covered for Agassi then I think that's dreadful.
"If they covered for the player and punished others for doing the same kind of thing then that would seem to me to be a lack of respect for all sportsmen."
Agassi said that he took the highly addictive drug with a former assistant and then lied to the ATP that his drink had been accidentally spiked.
The ATP took no action against him.