Alexander Zverev is convinced that he had a defect in the electronic call system during his open Madrid victory Sunday after the German risk a heavy fine by taking his phone to make a photo of a contested call.

The top seed over Alejandro Davidovich Fog 2-6, 7-6 (3), 7-6 (0) To reach the last 16 of the Claycourt tournament, but was irritated by an incident in the second set when it was called back by its opponent by tracking technology.

Beast He appealed to the UMPIRE chair Mohamed Lahyani to take a look at, but it was opposed, and the number two world was later warned of non -reporting behavior after pulling his phone out of his bag and took a photo of the country.

“I honestly think there was a defect in the system. There was an error in the system at that moment“Said Zverev, who later posted the photo on Instagram.

“It is not like a millimeter inside, one millimeter outside, it was like four to five centimeters. That’s why I went to Umpire and said ‘please go down to see this, I’m not crazy“”

Reuters has contacted ATP for comment.

At the beginning of this month, the number one world of women Sabalenka He also made a photo of a controversial ball sign during a match in Stuttgart and was warned of unstable behavior.

ATP has adopted the line call system for all its tours from this year, and while Zverev said he was a technology fan he was shocked by the incident in Madrid.

“It will be interesting to see what happens now, what fine I will get, though I am right“He said.

“Hope I don’t do well, because obviously, in my opinion, I’m completely on the right and don’t have to be fined for that“