Serena Williams powers into US Open 4th round with record win

Serena honored to break major match record at US Open (1:45)

Serena Williams talks about the significance of passing Martina Navratilova to set a new women's Open era record with her 307th victory at a major. (1:45)

Serena Williams' dominating third-round victory at the US 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.

Appearing in a day match for the first time at this year's tournament in New York, Williams wore a new white outfit that made a fashion statement with bold, pink sleeves. In her postmatch interview, she called them her "Wonder Woman sleeves."

"I feel this design, in particular, really is kind of like a superhero design," Williams said. "Like a really powerful, strong character that is strong, but yet isn't afraid to be soft at the same time."

Williams lived up to that nickname, with no sign of a right shoulder problem that had hampered her leading into the tournament.

"Definitely feels solid,'' Williams said.

Williams reached 121 mph on a serve. She had a half-dozen aces, bringing her total this week to 31. She faced only one break point -- her first of the tournament -- and saved it. She smacked seven return winners. She compiled a 24-5 total edge in winners in a match that lasted just one hour.

"Tennis-wise, I think it was very satisfying in all aspects. It's not perfect, of course," said her coach, Patrick Mouratoglou. "But for someone who didn't play much matches in the last two months, I think she's competitive."

Now there's an understatement.

"There is no pain. Maybe she feels a little. I don't know; I'm not in her shoulder. But I see she plays normal. She serves normal. At practice, she serves the quantity that we usually do, full power," Mouratoglou said. "So I don't see any problem. And she doesn't even talk about it. I know it's under control now."

That sounds like bad news for upcoming opponents, starting with 52nd-ranked Yaroslava Shvedova, who advanced to the round of 16 in New York for the first time by beating Zhang Shuai 6-2, 7-5.

Williams is 4-0 against Shvedova, taking eight of nine sets. Shvedova is best known for the first "golden set" in the Open era, which began in 1968: She won all 24 points of the first set in a victory over Sara Errani at Wimbledon in 2012, one match before a three-set loss to Williams there.

"She's a good player. She's dangerous," Mouratoglou said about Shvedova. "But I think Serena is even more dangerous."

Larsson would probably agree.

She was surprised by the variety Williams displayed Saturday, especially with some heavy-spin, high-bouncing strokes.

"You're out there, you're trying to find ways to win," Larsson said, "but sometimes, it's just not happening."

Meanwhile, Venus Williams closed in on a US Open rematch against her sister, moving into the fourth round with a 6-1, 6-2 victory over 26th-seeded Laura Siegemund.

The No. 6-seeded Williams broke Siegemund six of the eight times she served and won despite producing only 11 winners Saturday night.

Venus Williams owns seven Grand Slam titles, including two at Flushing Meadows. At 36, she was the oldest woman in the field.

If she and younger sister Serena each win twice more, they would play each other in the semifinals. A year ago, Serena beat Venus in the quarterfinals.

Also on the women's side, fifth-seeded Simona Halep smashed her racket in frustration en route to a 6-1, 2-6, 6-4 victory over 34th-ranked Timea Babos.

Halep, a semifinalist at Flushing Meadows a year ago, rallied from a 3-1 deficit in the deciding set and appeared to struggle with the power of the big-serving Hungarian, who blasted five aces and 25 total winners.

Halep threw down, and apparently cracked, her racket after losing a point late in the final set. It all ended just a few points later when Babos double-faulted on match point.

After the match, Halep said she wasn't able to move well because of a back problem. She acknowledged she didn't play her best, saying, "I don't know how I came back.''

Halep, whose best Grand Slam result was a run to the French Open final in 2014, next takes on 11th-seeded Carla Suarez Navarro for a spot in the quarterfinals.

Suarez Navarro defeated 20th-seeded Elena Vesnina 6-4, 6-3, the third time she has reached the fourth round or better at Flushing Meadows.

Her best result was a quarterfinal run in 2013, losing to eventual champion Serena Williams.

Monday's other fourth-round women's matchups will be No. 4 Agnieszka Radwanska vs. Ana Konjuh, and No. 10 Karolina Pliskova against Venus Williams.

The Associated Press contributed to this report.