Zverev phone use mars win over Davidovich Fokina

Zverev taking his phone out to take a photo of a ball mark was the big talking point from his win on Sunday

Zverev given code violation after taking a picture to dispute ball mark

Zverev disputed whether hawk-eye was working after a close line call in his win over Davidovich Fokina

Ruud overpowers Korda to make Madrid last 16

Mensik beats Shelton in straight sets to advance

Fritz through as Bonzi retires after two sets

Medvedev storms past qualifiier Cerundolo to reach fourth round in Madrid