Daniil Medvedev produced 23 winners as the second seed booked his spot in the US Open third round on Wednesday, dispatching German Dominik Koepfer, 6-4, 6-1, 6-2.
The Russian who played the final here two years ago over five sets against Rafael Nadal is into the third round for a fourth consecutive edition at Flushing Meadows.
Medvedev claimed his 201st career match win with victory in just over an our and three-quarters on the Ashe showcourt on a day or rain showers which kept the roof closed.
The world No. 2 has now won 13 of 15 matches over the hardcourt summer, with a quarter-final at the Olympics, the Masters title in Toronto and a Cincinnati semi-final.
“It was tough to make crazy winners or (hit) crazy shots,” he said. “Both of us didn’t do a lot of winners.
“But I had to stay super consistent. I knew from the beginning I have to keep my level high, and that’s what I managed to do.
“That’s how I won, so I’m really happy with my level today.”
Medvedev now faces Spain’s Pablo Andujar, who knocked out German veteran Philipp Kohlschreiber 6-4, 6-3, 6-1.
“I’m glad to be through in less than two hours,” Medvedev said. “I try to take every match as a new challenge.
“The more I win throughout my career, the better I’ll feel.”
There was a win for fellow Russian and fifth seed Andrey Rublev, who put out Spaniard Pedro Martinez 7-6(2), 6-7(5), 6-1, 6-1.
Victory in just under two hours puts the two-time Open quarter-finalist into the New York third round for the fourth and denies Martinez his first win over a Top 10 player (0-3).
Norway’s eighth seed Casper Ruud fought for more than three hours before losing to 117th-ranked outsider Botic Van De Zandschulp in a 3-6, 6-4, 6-3, 6-4 shocker.
The Dutchman, who has reached all four Slams this season as a qualifier earned the biggest men’s upset so far at the final major of the season after winning a round each at Roland Garros and Wimbledon this season.
Ruud came to the court with 40 Tour wins this season and four titles – including three earned in July on European clay.
Canada’s 12th seeded Felix Auger-Aliassime stopped Bernaba Zapata Miralles in a 7-6(5), 6-3, 6-2 decision while Spain’s Roberto Bautista Agut defeated Finn Emil Ruusuvuori 6-1, 6-3, 6-2.
Swiss qualifier Henri Laaksonen beat Cristian Garin of Chile 3-6, 7-6(5), 6-2, 6-4 while British No. 1 Dan Evans ousted Marcos Giron of the US 6-4, 7-6(3), 2-6, 6-3.
Main photo:- Daniil Medvedev winning second round match by Darren Carroll/USTA