Sinner struggling under new coach ahead of Italian Open
By ANDREW DAMPF AP Sports Writer ROME (AP) — Local favorite Jannik Sinner is struggling entering the Italian Open. The 20-year-old Sinner surprisingly split with his longtime coach Riccardo Piatti in February. He’s now working with the more inexperienced Simone Vagnozzi but has been dealing with physical problems after testing positive for COVID-19 earlier this
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