Sinner Reinstates Fitness Coach Linked to Doping Scandal

Jannik Sinner, the world's top-ranked tennis player, has brought back his former fitness coach, Umberto Ferrara.

Sinner had to sit out a few months earlier this year because a banned substance got into his system accidentally.

It happened when his trainer, Giacomo Naldi, used a spray that Ferrara gave him on a cut and later worked on Sinner.

Even though Sinner was cleared of any fault, he initially parted ways with Ferrara and Naldi.

Now, he's brought Ferrara back to help him with upcoming tournaments like Cincinnati and the US Open, to focus on winning.