Alex Zverev was given a warning for unsportsmanlike conduct after using his phone to take a photo of a disputed ball mark in ...

Top-seeded Alexander Zverev got a warning from the umpire for taking a photo of a ball mark during the clay-court Madrid Open ...

Top seed Alexander Zverev was warned for a taking a picture of a contested ball mark at the Madrid Open during more electric ...

For years, players have used ball marks to understand the story of a match on clay. Now, they are being asked not to trust ...

Alexander Zverev is convinced there was a defect in the electronic line calling system during his Madrid Open win on Sunday ...

During a clay court match in Madrid, Zverev pointed out the discrepancy between where the ball landed and Hawk-Eye’s call.

Alexander Zverev's third-round match became controversial when he photographed a disputed ball mark, reigniting debates over ...

MADRID — 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.

Alex Zverev was given a warning for unsportsmanlike conduct after using his phone to take a photo of a disputed ball mark in the middle of his 2-6, 7-6(3), 7-6(0) win over Spain’s Alejandro ...

Alexander Zverev is convinced there was a defect in the electronic line calling system during his Madrid Open win on Sunday ...