At 30/0 in the following game, Gauff hit a first serve. But there was one problem - Zheng wasn't at the baseline. The crowd erupted in laughter - the 21-year-old made a facepalm - and even the chair umpire smiled.

Match recap, highlights, and stats from Coco Gauff's victory against Qinwen Zheng in the Italian Open semifinal.

Coco Gauff secured an epic victory over Zheng Qinwen at the Rome Open 7-6(3), 4-6, 7-6(4), to earn her spot in the Rome Open final. The duel was the longest match in WTA Rome Open history, with three hours and 33 minutes of play.