Jannik Sinner has caused widespread astonishment by choosing to work again with Umberto Ferrara, one of the key figures ...

World No. 1 Jannik Sinner has rehired fitness coach Umberto Ferrara, nearly a year after firing him over the fallout from his ...

Wimbledon champion Jannik Sinner has re-appointed his former fitness coach Umberto Ferrara with immediate effect, the Italian world No 1 confirmed on Wednesday.

World number one Jannik Sinner has re-appointed fitness coach Umberto Ferrara, with whom he parted ways following the ...