Jannik Sinner’s coach says doping case has taken physical and mental toll

Jannik Sinner has escaped a ban despite two failed anti-doping tests (AELTC/Joe Toth/PA)

Jannik Sinner’s coach has defended the world number one and suggested the investigation into his failed anti-doping tests led to his player missing the Olympic Games.

It was revealed on Tuesday that Sinner failed two anti-doping tests in March but has been absolved of fault or negligence by the International Tennis Integrity Agency (ITIA).