Roger Federer of Switzerland beat  Richard Gasquet of France at the ATP World Tour Finals at the O2 Arena in London. Photograph: Stefan Wermuth/Reuters

Roger Federer has faith in tennis’ anti-doping system but believes there is still not enough testing being done. The issue has been a hot topic at the(...)

Croatia’s Marin Cilic. Photograph: Dominic Lipinski/PA Wire

Marin Cilic has had his nine-month doping suspension reduced to four months on appeal and is free to resume his career.The Croatian was handed the su(...)

Mikhail Youzhny of Russia celebrates after defeating Viktor Troicki of Serbia at Wimbledon. Photograph: Suzanne Plunkett/Reuters

Bernard Tomic secured his place in Wimbledon’s second week after winning a wonderful match against ninth seed Richard Gasquet. Much has been said of t(...)