Alexander Zverev was given a warning for taking a picture of a ball mark at the Madrid Open amid ongoing controversy surrounding electronic line-calling on clay surfaces. The top seed ...

Alexander Zverev was warned for a taking a picture of a ball mark at the Madrid Open as controversy over electronic line calling on clay continued. The system has become commonplace in recent ...

Alexander Zverev was warned for a taking a picture of a ball mark at the Madrid Open as controversy over electronic line calling on clay continued. The system has become commonplace in recent years on ...

Alexander Zverev took a picture of a ball mark after being incensed at a call during his win over Alejandro Davidovich Fokina (Manu Fernandez/AP) Alexander Zverev was warned for a taking a picture ...

It does not necessarily reflect the view of The Herald. Alexander Zverev was warned for a taking a picture of a ball mark at the Madrid Open as controversy over electronic line calling on clay ...

It does not necessarily reflect the view of The Herald. Alexander Zverev was warned for a taking a picture of a ball mark at the Madrid Open as controversy over electronic line calling on clay ...