The 24-year-old Anisimova did herself no favours with a string of untimely double faults late in the second set, before Pegula went up another gear in the tiebreaker. “I’ve been able to go deeper at the US Open in the last couple of years, but here was the first slam that I really broke through at. “We know each other pretty well and I was just trying to stay aggressive,” said the 26-year-old Rybakina. “I feel like in the first set for both of us, the first serve was not really working. “I’m just really happy with the win.” Rybakina crunched down another 11 aces to take her tournament-leading tally to 35.