Seventeen-time Grand Slam champion Roger Federer believes there should be more drug testing on the ATP Tour.
The Swiss, who believes tennis is generally a ‘clean’ sport, followed on from Andy Murray’s comments last week, calling for more tests.
“We should do more in terms of blood testing,” Federer said.
“I also support the biological blood passport, with information stored away.
“It’s important to make sure that tennis is credible and clean to a maximum.
“We don’t want players even getting the idea to cheat; of course we need more funding.
“Maybe the Grand Slams should put in more since they have the most to lose if one of their players is not clean.”