A retired Italian tennis player has suggested that Jannik Sinner never wanted to get rid of fitness trainer Umberto Ferrara in the wake of his anti-doping case last year. The world No. 1 was found to have “bore no fault or negligence” after proving the tests were the result of contamination.

Wimbledon champion Jannik Sinner has rehired Umberto Ferrara as his fitness coach nearly a year after firing him for his role in the top-ranked player’s doping case.

Nick Kyrgios has hit out at Wimbledon champion Jannik Sinner over his decision to re-appoint the fitness coach he split with after last year’s positive tests for banned substance clostebol.