Alexander Zverev: Olga's accusations make me sad

German tennis star Alexander Zverev on Thursday said accusations by an ex-girlfriend Olga Sharypova that he had attacked her in New York last year were "simply not true". World No. 7 Zverev insisted claims made by Sharypova that he tried to "strangle" her while at the US Open were "unfounded" and made him "very sad".

Sharypova...