2017 U.S. Open: No. 1 seed Karolina Pliskova rolls into U.S. Open quarters

Top-seeded Karolina Pliskova had no trouble reaching the women's quarterfinals at the U.S. Open on Monday.

Pliskova crushed American Jennifer Brady 6-1, 6-0 in 46 minutes to become the fifth woman to advance. The Czech Republic native is in the quarters for the second consecutive year.

To get there, Pliskova won 92 percent of her first serves and had 23 winners against Brady.

The straight-set victory was a welcome reprieve for Pliskova after being pushed to three sets in her previous two matches and fighting off a match point in one of those -- a 3-6, 7-5, 6-4 victory over No. 27 Zhang Shuai.

Pliskova won 22 of 24 points on her first serve against Brady and broke her unseeded opponent six times.

"I really wanted to make the best of the chance I got from the last match, being down match point, so today was much better," Pliskova said after the match.

Brady advanced to the fourth round in a major championship for the first time, but she appeared overwhelmed by the big stage, converting only 38 percent of her first serves in the first set.

Pliskova remained undefeated against Americans this year. She will face the winner of the match between No. 20 CoCo Vandeweghe and Lucie Safarova, who met later Monday afternoon.