When Roger Federer this week called for the introduction of biological passports in tennis, the man with the most polished image in the sport hit a clean winner. As the most popular player in the world, an influential member of the ATP players' council, the owner of 17 grand slam titles and a magnet for high-level endorsements that lift his annual earnings beyond $50m (£32.2m) a year Federer is listened to at all levels of the game.
Boxing has an almost insoluble dilemma. Suspicions have been rife for the past few years that several top-flight boxers use performance-enhancing drugs (a couple have even been caught, while others have proclaimed their innocence, in and out of court), but the cancellation of a major fight costs fighters and their connections – as well as promoters and their television backers – so many millions that there is little collective will for discovery.
The American wrestling community has reacted with dismay to the news that the International Olympic Committee has voted to remove the sport from the summer Olympic Games in 2020.
Toni Minichiello, the coach who guided Jessica Ennis to Olympic gold, has accused British Athletics chiefs of a "lack of respect" after he was offered a reduced package – on a consultancy basis – to continue working with one of the world's most successful athletes.
Tom Gibson reports on the world of ironman.
Andy Murray and Novak Djokovic, like Roger Federer and Rafael Nadal for so long before them, have a special relationship.
After the confession, the lawsuits. Lance Armstrong's extended appearance on the Oprah Winfrey network, in which the man stripped of seven Tour de France wins finally admitted to doping, has opened him up to several multi-million dollar legal challenges.
The Ryder Cup sails into uncharted waters next October – and not just because, should the meteorological combination of Scotland + autumn x Celtic Manor 2010 hold true, Gleneagles will be battered by so much rain that half the estate will aquaplane up the A9 towards Perth.
Chris Froome said it was an easy decision to extend his contract with Team Sky to the end of 2018 because “their values are my values”.
Every day at Royal Ascot this summer will be a £1m day following a decision at the Queen’s racecourse to ramp up prize money for the famous week of action in June. An extra £1m in prize money is to be added to purses, taking the total for the five race-days to more than £6.5m and ensuring that at least £1m will be, as it were, redistributed each afternoon.