Coco Coffee rallied from a slow start and scored a second set argument with the chair umpire Karolina Pliskova 2-6, 6-4, 6-3 to enter the quarterfinals of the Dubai Championship on Wednesday.
Third-seeded Goff ended Pliskova's 11-match winning streak.
The 19-year-old American took a 4-2 lead in the second set after a long back-and-forth with chair umpire Pierre Paci. After Pliskova turned it into the net, Goff complained to Bacchi that she had called her serve at deuce out.
Goff had to return his first serve and led 5-2.
The US Open champion said the argument was „fuel” for him.
„It's okay. It's just a point. It happens in tennis. Players make mistakes. Everybody makes mistakes,” Kauf said in his on-court interview. „It just went up for me from there.”
Goff will face Anna Galinskaya after the Russian defeated ninth seed Jelena Ostapenko 6-4, 7-5.
Top seed Ika Svitek advanced to the last eight after beating Dubai champion Elina Svitolina 6-1, 6-4.
Fourth-seeded Elina Rybakina has a tougher run to the quarterfinals. She defeated Magdalena Frech 7-6 (5), 3-6, 6-4.
Sviatek next plays sixth seed Qinwen Zheng, who beat Anastasia Potapova 6-3, 6-2. Rybakina is in the quarter-finals against Jasmin Paolini. The Italian defeated eighth seed Maria Zaccari 6-4, 6-2.
In the other quarter-final match, seventh seed Marketa Vondrusova faces Sorana Cirstea.