Coco Gauff overcame 17 double-faults and came back after being a game away from elimination at the WTA Finals, eventually pulling out a 5-7 7-6(4) 6-3 victory over Wimbledon champion Marketa Vondrousova in a round-robin match to stay in contention for a semifinal berth.
"Mental toughness is the biggest thing I'm pleased with," Gauff said on Friday.
"That was a tough match. She's not an easy player. Not easy conditions. And I stayed in there, every point, just fighting." Gauff, the 19-year-old from Florida who won the U.S. Open in September, dropped four consecutive games and 16 of 21 points to go from leading the opening set to dropping it and trailing 1-0 in the next.
