US Open: World number one Iga Swiatek beats Liudmila Samonsova to reach quarters

World number one Iga Swiatek reached her second US Open quarter-final on Monday with a straight sets win over Liudmila Samonsova to stay on course for a sixth Grand Slam title.

Swiatek defeated her 16th-ranked Russian rival 6-4, 6-1, reeling off eight of the last nine games, and will take on American sixth seed Jessica Pegula for a place in the semi-finals.

Four-time French Open champion Swiatek won the US Open in 2022, beating Pegula on the way in a one-sided last-eight tie.

Pegula made the quarter-finals earlier Monday with a 6-4, 6-2 win over Russia's Diana Shnaider.

Medvedev in QF

Daniil Medvedev set-up a potential US Open quarter-final showdown with world number one Jannik Sinner on Monday as both men looked to exploit the huge hole left by the shock exits of superstar duo Novak Djokovic and Carlos Alcaraz.

Medvedev, the 2021 champion in New York, outclassed Nuno Borges, who was bidding to become the first Portuguese man to make a Grand Slam quarter-final, 6-0, 6-1, 6-3.

Top seed Sinner, who won his maiden Slam at the Australian Open this year, takes on Tommy Paul in the night session on Arthur Ashe Stadium.

French Open champion and women's world number one Iga Swiatek, meanwhile, stayed on course for a sixth Grand Slam title with a straight sets win over Russia's Liudmila Samsonova.

Medvedev, the only former champion left after the defeats of four-time winner Djokovic and 2022 champion Alcaraz, is in the quarter-finals for the fifth time in six years.

The world number five easily downed 34th-ranked Borges whose challenge fizzled out under the weight of 51 unforced errors while Medvedev broke serve eight times.

"I played Tommy twice this season. I beat him once but I feel as if he should have beaten me both times," said Medvedev who was also runner-up in 2019 and last year.

"I've had unbelievable battles with Jannik. It will be very physical for both of us."