Then, serving at 40-all, it happened - an awesome point won by Gauff that led her to take the game, the second set and, eventually, the match.
Tennis fans leapt to their feet, cheered and applauded after 15-year-old Gauff, known as Coco, fought off two match points to beat Polona Hercog on Friday evening.
After her latest victory, which comes after wins over Venus Williams and Magdalena Rybarikova, the American outlined her desire to build on an incredible first week at SW19. Both of those matches were on No. 1 Court, the second biggest stadium at the All England Club. The tennis world is watching, waiting to learn the answers.
"If there is anybody who is going to be able to maintain or keep up with the pressure that is happening right now with her is Cori".
The tournament's two main arenas are the only ones that have a retractable roof and artificial lights, allowing play once the sun goes down. They also have the largest capacity.
Rybarikova desperately wanted to force Gauff to serve out the match but she was having none of it, and as the tired Slovakian dumped a return into the net the teenager celebrated another hugely impressive victory.
"Halep has not had a great year and looks tight on this surface", he told BBC's Today at Wimbledon. She has since proven that was no fluke, as she defeated Polona Hercog, 3-6, 7-6, 7-5, in the third round on Friday. "But I guess Centre can be my court as well".
Beating Hercog 6-3, 7-6, 7-5 the United States teen has become a surprise star of the event so far.
It's the second year in a row that Pella knocked out the previous runner-up.
Anderson converted only one of his nine break points against Pella.
Gauff said she does not find her wins to be a flash in the pan.
"The crowd was fantastic even when I was down match point they were still cheering me on". And past year she won the French Open equivalent only two months after her 14th birthday.
Martic, fresh from her best ever grand slam performance at Roland Garros, where she reached the quarter-finals, has made the Wimbledon fourth round for a second time in her career after beating Danielle Collins 6-4 3-6 6-4.
Closing out any match at a major is hard and especially so when bidding to get to pastures new.
The American saved the first match point with a backhand slice that caught the line and kick start her comeback. She actually lost her first set and trailed her opponent before she turned it around and forced a tie break.
Wimbledon has officially gone loco for Coco. But can the brash 15-year-old live up to her fast-growing reputation and do the unthinkable?
Having been nearly anonymous when she arrived at Wimbledon, the American is fast becoming a star.
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