Zverev gets a warning for taking photo of ball mark

MADRID, Apr 28 (AP): Top-seeded Alexander Zverev got a warning from the umpire for taking a photo of a ball mark during the clay-court Madrid Open on Sunday after complaining about electronic line-calling.

The German player told umpire Mohamed Lahyani there was a "malfunction" with the system after a backhand from local favorite Alejandro Davidovich Fokina was called in while Zverev thought it had gone wide during their third-round match. Zverev then took a phone from his bag and took a photo of the mark, for which he received the warning for unsportsmanlike conduct.