Coco Gauff makes ‘lucky’ admission on crazy 2nd-set comeback to beat Marta Kostyuk

Coco Gauff admitted she was already preparing for a third set before mounting a comeback against Marta Kostyuk on Thursday, winning six consecutive games to secure a 6-4, 7-5 win in round-robin play at the WTA Finals . Gauff trailed 5-1 in the second set before rallying to defeat Kostyuk in straight

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