Jannik Sinner has reappointed fitness coach Umberto Ferrara to his coaching team having previously dropped Ferrara during Sinner’s recent doping suspension.

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.

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.