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After Doping - World Number One Hires New

Jannik Sinner fired his former fitness coach and physiotherapist after the notable doping case. Now he presents two replacements – who previously worked with Novak Djokovic.

After Doping - World Number One Hires New

Sinner's coach: He has worn him down

Jannik Sinner is coming to the US Open overshadowed by the revelation that he tested positive for a banned substance in the spring. It has taken a toll on him both physically and mentally, says the world star's coach Darren Cahill.

Sinner's coach: He has worn him down

Critical after the news about Sinner: "Ridiculous"

Jannik Sinner tested positive for doping twice – but was acquitted. Nick Kyrgios thinks that's wrong.

Critical after the news about Sinner: "Ridiculous"

World Number One Tests Positive for Doping – Cleared

The world number one in tennis, Jannik Sinner, showed a positive doping test on two separate occasions in March. According to tennis's international testing organization, ITIA, the test showed positive for a metabolite of clostebol, a banned steroid according to WADA's regulations.

World Number One Tests Positive for Doping – Cleared