Serena Williams survived a second-round scare at the U.S. Open on Wednesday with a 5-7 6-3 6-1 win over American wildcard Catherine McNally to keep alive her hopes of securing a record-tying 24th Grand Slam title.
World number eight Williams, who captured the first of her six U.S. Open titles two years before her 17-year-old opponent was born, spent the first half of the match trying to find her rhythm but when she did she was off to the races.
Fifth seed Elina Svitolina knocked Venus Williams out of the U.S. Open on Wednesday to reach the third round despite an heroic defensive effort from the 39-year-old former champion.
Trailing 5-3 in the second set, seven-times Grand Slam champion Williams saved five match points to hold serve in a dramatic 22-point game.
The 24-year-old Ukrainian, who has reached the fourth round of the U.S. Open for the past two years, struggled to convert break points throughout the match, winning just four out of 17.
Second seed Ash Barty fought off a stiff challenge at the end of the second set to beat American Lauren Davis 6-2 7-6(2) and reach the third round of the U.S. Open on Wednesday.