CANCUN, Mexico—Coco Gauff overcame 17 double-faults and came back after being a game away from elimination at the WTA Finals on Friday, eventually moving into the semifinals after pulling out a 5–7, 7–6 (4), 6–3 victory over Wimbledon champion Marketa Vondrousova in a round-robin match.
“Mental toughness is the biggest thing I’m pleased with,” Gauff said. “That was a tough match. She’s not an easy player. Not easy conditions. And I stayed in there, every point, just fighting.”





