NEW YORK, Sept 6: World number one Serena Williams set a new Grand Slam record of 308 victories with a win over Yaroslava Shvedova of Kazakhstan at the US Open in New York.
The American, 34, won 6-2, 6-3 to pass Roger Federer in the all-time list of matches won at the tennis majors.
She moves on to the quarterfinals, where she will face Romanian fifth seed Simona Halep, who beat Spain's Carla Suarez Navarro 6-2, 7-5.
"It's a huge number," Williams said of her record 308th win.
"I think it's very significant actually. I definitely never thought I would be playing still. Now I don't really see when I'm going to stop.
"I'm just enjoying these moments out here, getting to break records that I didn't even know existed or I didn't even know was possible.''
Halep has lost seven of eight matches against Williams but hopes that will at least keep the pressure off in their quarterfinal.
In the men's category, second seed and 2012 champion Andy Murray crushed Bulgaria's Grigor Dimitrov 6-1, 6-2, 6-2 to reach a sixth US Open quarterfinal on Monday, clocking up a personal fast serve record in the process.
The 29-year-old reigning Wimbledon and Olympic champion stormed to an impressive seventh win in 10 meetings against the 22nd-seeded Dimitrov.
From the moment Murray broke for a 3-1 lead in the first set, on the back of a lung-busting 32-shot rally, the outcome of the Arthur Ashe Stadium clash was never in doubt.
For good measure, Murray sent down his fastest ever serve of 141mph (226.9 km/h) at the end of a set where he allowed Dimitrov just five points on his service.
"I once hit a 145mph serve in San Jose but they recalibrated the machine the next day so it didn't count. Tonight was the first time I have gone above 140," said the 29-year-old.
"It was lucky and I doubt I'll ever do it again."
Dimitrov broke only once in the match in the fourth game of the second set but it was a brief respite as Murray quickly reclaimed it before taking 10 of the next 12 games to seal the rout.
Dimitrov committed 43 unforced errors as Murray set up a last-eight clash with Japanese sixth seed Kei Nishikori, the 2014 runner-up who downed 37-year-old Ivo Karlovic 6-3, 6-4, 7-6 (7/4).
Karlovic fired 21 aces in the contest but Nishikori's 44 winners and a miserly seven unforced errors proved the key.
Juan Martin del Potro, the 2009 champion, became the lowest ranked player in 25 years to reach the quarterfinals.
The 142nd-ranked del Potro was leading eighth-seeded Dominic Thiem 6-3, 3-2 when the Austrian retired with a right knee injury.
Del Potro will face fellow Grand Slam title winner Stan Wawrinka for a semifinal spot.
Wawrinka, a former Australian and French Open champion, reached a fourth successive quarterfinal in New York with a hard-fought 6-4, 6-1, 6-7 (5/7), 6-3 win over Illya Marchenko, the world number 63 from Ukraine.
Del Potro is playing just his second Grand Slam event since the 2014 Australian Open.
"You never want to win a match like this. I wish Dominic a quick recovery as he has a great future," said 27-year-old del Potro, the lowest-ranked man in the last-eight since Jimmy Connors, at 174, went all the way to semifinals in 1991.
The 23-year-old Thiem had needed five sets to beat Australia's John Millman in the first round and four to get past Pablo Carreno Busta of Spain in the last 32.
Having saved a match point in an epic triumph over Dan Evans in the last round, Wawrinka, a semifinalist in 2013 and 2015, cruised through the first two sets against Illya Marchenko.
The Ukrainian, who arrived in New York on a seven-match losing streak, battled back from 2-4 and 3-5 down in the third set to force a tiebreaker.
He was a break to the good at 2-1 in the fourth before Wawrinka, reinvigorated by a violent racquet smash courtside, recovered to win five of the next six games. - Agencies