Federer wants more doping tests in tennis

London: In the wake of Novak Djokovic's attack against tennis' anti-doping program, Roger Federer defended the system and asked for more doping tests on Thursday.

Djokovic lashed out at the World Anti-Doping Agency and at tennis authorities this week, saying the decision in Victor Troicki's doping case proved the fight against doping is badly organized.

Troicki had an 18-month ban reduced on appeal to 12 months for skipping a blood test in April. The Court of Arbitration for Sport empathized with Troicki but had to uphold a ban.

Asked about the case, Federer said he has faith in the system but the testing program should be reinforced because he feels "like we're not getting maybe tested enough."