Petra Kvitova produced an efficient performance as she progressed to the second round of the US Open after eliminating Laura Siegemund on Tuesday.
Kvitova has enjoyed a strong season on the WTA Tour, taking out the Sydney International and Madrid Open before successfully defending her Connecticut Open crown last week.
And the Czech fifth seed continued her good form at the expense of Siegemund, triumphing 6-1 6-1 in 59 minutes at Flushing Meadows.
Kvitova was tested early but the two-time grand slam champion proved far superior as she improved her career record at the US Open to 13 wins and seven losses, having made the fourth round in 2012 and 2009.
Tuesday's first-round match was the first in a grand slam singles main draw for Siegemund, who had not played on hard courts since February prior to qualifying in New York.
The 27-year-old did not look overawed during the early stages at Arthur Ashe Stadium, which saw Siegemund and Kvitova create break-point chances.
After managing to hold serve in the first game, Kvitova earned a triple break point at 0-40 and went on to break the German, who sent a shot long.
Siegemund, though, responded immediately, breaking to love the very next game, only for Kvitova to break back and consolidate for a 4-1 lead following an unforced error.
Kvitova flexed her muscles from that point as Siegemund dropped serve to love before the former closed out the opening set with a winning percentage of 75 on first serve.
The 25-year-old Kvitova showed her quality in the second stanza, breaking in the fourth game, however she was tested in the fifth, fending off five break points to hold and open a 3-1 buffer.
Siegemund's inability to break rattled the world number 119, who dropped serve on the back of yet another unforced error - her 15th of the match - as Kvitova booked a spot in the next round thanks to a double fault.