Jannik Sinner’s former physical trainer Umberto Ferrara has dropped a bombshell in the wake of the tennis star’s doping ban.

Almost all the top 20 WTA and ATP players sign a letter to organisers of Wimbledon, and the Australian, French and US opens demanding a more equitable distribution of revenue.

Reuters has contacted the four Grand Slams seeking comment. In 2024, a record $254 million in player compensation was awarded ...