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.

It went well" German Alexander Zverev, the top seed at the Madrid Masters 1000, who has won twice, showed his appreciation for the tournament held at the Caja Magica and downplayed the incident he ...

World No. 2 Alexander Zverev became the latest tennis player to question electronic line calling (ELC) on clay courts during a tight Madrid Open contest against Spain’s Alejandro Davidovich ...