By Steve Keating
NEW YORK (Reuters) - The U.S. Open women's draw was blown wide open by a series of upsets on Friday but it was business as usual on the men's side with Roger Federer leading a parade of seeds into the third round at the year's final grand slam.
Lucic-Baroni, who failed to build on her run to the 1999 Wimbledon semi-finals, was almost overcome by the victory.
"I mean, I'm a little bit emotional now. Sorry," she said, wiping away tears. "It's been really hard.
"After so many years to be here again, it's incredible. I wanted this so bad. So many times I would get to ... a place where I could do it.
"Then I wanted it so bad that I'm kind of burned out. I'm so happy."
The tremors continued at the U.S. National Tennis Centre as Swiss teen Belinda Bencic ousted sixth-seeded German Angelique Kerber 6-1 7-5 to reach the round of 16 in her U.S. Open debut.
The tournament also lost a fan favorite when Italy's Sara Errani posted her first career win over twice champion and 19th seed Venus Williams, coming out on top in an absorbing roller-coaster clash 6-0 0-6 7-6(5).
By the time fifth seed Maria Sharapova had closed out the action under the Arthur Ashe Stadium floodlights with a labored 6-2 6-4 win over Germany's Sabine Lisicki the top of the women's draw had lost four of the top eight seeds.
The top 10 men's seeds, however, remain intact.
The highest-ranked casualty was Ernests Gulbis of Latvia, the 11th seed, who was ousted by 45th-ranked Dominic Thiem of Austria 4-6 3-6 6-4 6-3 6-3.
'JUST REALLY FAST'
Federer, chasing an 18th grand slam title, served up a tidy 6-4 6-4 6-4 win over big-hitting Australian Sam Groth to ease into the third round.
The former world number one has feasted on Australian opponents in grand slams over the years, piling up an 18-1 record against men from Down Under, and Groth, who was facing a top 10 opponent for the first time, proved little more than a distraction to the Swiss maestro.
Throughout the one hour and 48 minutes contest the Australian took his best shots at the 33-year-old, including booming serves of over 140mph. [ID:nL3N0R001Q]
"The 142, honestly I hit it and I turned around," said Federer. "I didn't know if it went into the stands or the bottom of the net or on the other side. I just felt like I hit it clean.
"The 147 one I felt like I was there and felt like I had more control on it.
"The difference between 142 and 147, there's none really in the racquet. I think once you pass the 135 range everything is just really fast."
Ferrer reached the third round without lifting his racket when Australian Bernard Tomic withdrew with a hip injury, while Dimitrov breezed into the third round with a 6-1 6-2 6-2 win over Israel's Dudi Sela.
Berdych had a much tougher time, needing five sets and three hours 45 minutes to tame Martin Klizan of Slovakia 6-3 4-6 6-2 3-6 6-3.
Richard Gasquet, seeded 12th, and Gael Monfils, 20th, advanced in straight sets to set up an all-French collision for a berth in the fourth round.
Working harder was 18th-seeded South African Kevin Anderson, a four-set winner against Jerzy Janowicz of Poland, while Spain's 19th seed Feliciano Lopez won a fourth-set tiebreaker to advance past Japanese qualifier Tatsuma Ito.
(Editing by Peter Rutherford)