News that Jannik Sinner, the men's world number one, had failed two doping tests stunned tennis. BBC Sport examines the key ...

Alcaraz, 21, and Sinner, 23, head into the 2025 tennis season at the top of the men's game, coming off a year that portended ...

Klitschko is considering a return to the ring after retiring in 2017 - and a rematch with Fury could make sense, according to ...