Serena Williams’ dominating third-round victory at the U.S. Open was notable for a new career milestone: 307 Grand Slam wins.

Williams’ 6-2, 6-1 win over 47th-ranked Johanna Larsson of Sweden improved her major-tournament mark to 307-42, putting her one win up on Martina Navratilova among women and tying Roger Federer among all players in the Open era.

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Appearing in a day match for the first time at this year’s tournament, Williams wore a new white outfit that made a fashion statement with bold, pink sleeves. In her post-match interview, she called them her “Wonder Woman sleeves.”

Williams lived up to that nickname, with no sign of a right shoulder problem that had hampered her leading into the tournament. She ripped six aces and 24 winners in a match that lasted just one hour.