Zverev posted a photo of the disputed ball mark from his match in Madrid
Alexander Zverev was unhappy during his match against Alejandro Davidovich Fokina in Madrid due to a ball called in by the electronic line-calling system.
Convinced it was out, he took a photo of the mark and quickly posted it on social media after his 2-6, 7-6, 7-6 victory.
"I'll just leave this here. It was called in. Interesting decision."
Madrid