Jannik Sinner rehired fitness trainer Umberto Ferrara after originally parting ways due to his Clostebol case.

In some intriguing news this morning, Jannik Sinner has reappointed Umberto Ferrara, the fitness coach who he sacked in ...

Jannik Sinner has made another change to his coaching team as he has rehired the fitness coach he sacked just 10 months ago ...