Well over half of top tennis players believe not enough drug testing is being done in the sport.

ESPN has taken an anonymous survey of 31 top players who've gathered in Paris for the French Open.

While 64 percent don't think enough drug testing is being done, more than three quarters of them think less than 10 percent of players have taken PEDs.

22 percent say they know of a player who has used drugs.

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Maria Sharapova doesn't come out of the survey looking too rosy.

She's named the most over-rated player in the game along side her former boyfriend Gregor Dimitrov, while she is also labelled as the biggest diva on tour.

64 percent of players think she should be suspended for a year for her failed drugs test, while 29 percent think she deserves a multi year ban and just 6 percent no punishment at all.