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 confirmed he has reappointed his former fitness coach Umberto Ferrara with immediate effect. Italian world No.1 Sinner parted ways with Ferrara and physiotherapist Giacomo Naldi last year after the investigation into his positive tests for the banned substance clostebol in March.