April 28 (Reuters) - Alexander Zverev ... and while Zverev said he was a fan of the technology he was shocked by the incident in Madrid. "It's going to be interesting to see what happens now ...

Alexander Zverev ... against the German. Zverev, playing Tallon Griekspoor, was heckled while serving at 5-5 in the second set when the supporter yelled: "Let's go, you... wifebeater!" ...

Alexander Zverev asked for a spectator ... against Dutchman Tallon Griekspoor when the fan shouted: "Let's go, you wifebeater." Zverev spoke to chair umpire Fergus Murphy and could be heard ...