Federer calls for more drug tests
Roger Federer believes that there needs to be more frequent drug testing in tennis to root out dopers.
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Federer is concerned that he has not undergone a drug test recently, a claim that backs up those made by world number one Novak Djokovic.
Both players have said that they were tested more in previous years when they should be tested more often now, with Federer suggesting that blood passports should be implemented and a measure to protect against doping in the future.
"A blood passport will be necessary as some substances can't be discovered right now," asserted the Swiss maestro.
"But there also should be more blood tests and out of competition controls in tennis.
"I didn't get tested on blood after the Australian Open and I told the responsible people over there that it was a big surprise for me," he added.
"But there also will be more funding needed to make all the tests possible and the Grand Slam tournaments should help to finance that as it is in their best interest to keep the sport clean and credible."