(Reuters) - Roger Federer and Novak Djokovic were at their dominant best at the U.S. Open on Friday as both cruised into the round of 16 with straight-sets victories.
After making sluggish starts in his previous two matches, five-times winner Federer took his game up a notch to power past Briton Dan Evans 6-2 6-2 6-1 under the open roof at Arthur Ashe Stadium on a sunny day.
The 38-year-old fired 48 winners and 10 aces to shake off any remaining rust since his Wimbledon final defeat by Djokovic earlier this year and faces Belgium's David Goffin next.
"At the end of the day what matters the most for me is that I am in the third round after those two sort of slow starts," Federer told reporters.
"I gave myself another opportunity to do better, and I did. You almost tend to forget what happened and you move forward."
The Swiss was joined in the next round by defending champion Djokovic who shrugged off a left shoulder injury that hampered him in his last match and beat American Denis Kudla 6-3 6-4 6-2.
Up next for the Serbian is former champion Stan Wawrinka who fought off a determined Paolo Lorenzi to secure a 6-4 7-6(9) 7-6(4) victory.
Fifth seed Daniil Medvedev overcame Spaniard Feliciano Lopez 7-6(1) 4-6 7-6(7) 6-4 in the final match of the day.
American Serena Williams continued her charge towards a record-equalling 24th career Grand Slam title with a comfortable 6-3 6-2 victory over Czech Karolina Muchova. She next takes on Croatian 22nd seed Petra Martic.
"I think I had a lot of intensity today which was really good for me," Williams said. "I don't know how I would grade my performance. Just gotta keep playing and believing."
Second seed Ash Barty outclassed Greece's Maria Sakkari 7-5 6-3 while Madison Keys beat fellow American Sofia Kenin 6-3 7-5. Czech third seed Karolina Pliskova defeated an ailing Ons Jabeur 6-1 4-6 6-4.
Highlights of the fifth day at the U.S. Open, the final Grand Slam tournament of the year, on Friday (times GMT):
0309 HOLDER DJOKOVIC SAFELY THROUGH
Defending champion Novak Djokovic showed no signs of the left shoulder injury that dogged him in his previous match as he swatted aside unseeded American Denis Kudla 6-3 6-4 6-2 to reach the fourth round.
0045 KEYS KNOCKS KENIN OUT
Madison Keys beat fellow American Sofia Kenin 6-3 7-5, smashing 10 aces and 26 winners to set up a fourth round clash with Elina Svitolina.
0030 KOEPFER OUSTS BASILASHVILI
Unseeded German Dominik Koepfer beat 17th seed Nikoloz Basilashvili 6-3 7-6(5) 4-6 6-1 to reach the last 16 on his second main draw appearance at a Grand Slam.
0020 SVITOLINA TOO SLICK FOR COMPATRIOT YASTREMSKA
Elina Svitolina beat fellow Ukrainian Dayana Yastremska 6-2 6-0 to reach the last 16 for the third year in a row.
The fifth seed converted five of the six break point chances she carved out, wrapping up the one-sided affair in 53 minutes.
2230 WAWRINKA ADVANCES AFTER BEATING LORENZI
Former champion Stan Wawrinka beat Italy's Paolo Lorenzi 6-4 7-6(9) 7-6(4) to reach the last 16 for the first time since he won the title three years ago.
The 34-year-old, who could face Novak Djokovic if the top seed beats Denis Kudla later on Friday, served 24 aces and hit 64 winners but also made 50 unforced errors.
2140 WANG SETS UP BARTY CLASH
China's Wang Qiang beat Fiona Ferro of France 7-6(1) 6-3 to reach the last 16 of a Grand Slam for the first time.
The 18th seed served five aces and cracked 26 winners to set up a meeting with Australian second seed Ash Barty, who she has lost to in straight sets in both their previous career meetings.
2130 GOFFIN GRINDS PAST CARRENO BUSTA
Belgian 15th David Goffin beat Spain's Pablo Carreno Busta 7-6(5) 7-6(9) 7-5 to set up a meeting with third seed Roger Federer in the fourth round.
Both players struggled to take their chances, with Carreno Busta converting one of nine break point opportunities and Goffin two of 10.
2015 EVANS UNHAPPY AT SCHEDULING, FEDERER HITS BACK
Briton Dan Evan said having to play two matches in quick succession was partly to blame for his defeat by Roger Federer.
The Briton, whose second round match was postponed by a day due to rain, did not get off court till Thursday evening and he was first up on Arthur Ashe Stadium against Federer.
The Swiss did not take kindly to Evans' comments.
"I'm sick and tired of it, that apparently I call the shots. The tournament and the TV stations do. We can give our opinion. That's what we do. But I'm still going to walk out even if they schedule me at four in the morning."
1940 KONTA CRUSHES CHINA'S ZHANG
Briton Johanna Konta was in cruise control against Zhang Shuai, beating the Chinese 6-2 6-3 to advance.
The 16th seed crushed 34 winners to Zhang's nine and also sent down four aces as she breezed into the last 16.
1930 SERENA STORMS PAST MUCHOVA
Eighth seed Serena Williams reached the fourth round of the U.S. Open for the 18th time in her career after swatting aside Karolina Muchova 6-3 6-2.
The American, who has won her home major six times, converted five of eight break point chances against the Czech and will face Croatia's Petra Martic in the next round.
1910 BARTY PARTY RUMBLES INTO ROUND FOUR
Second seed Ash Barty raced into the fourth round after beating Greece's Maria Sakkari 7-5 6-3.
The Australian sent down 11 aces as she sealed her second consecutive straight sets victory at this year's tournament, with her only dropped set coming against Kazakhstan's Zarina Diyas in the opening round.
1810 DE MINAUR WINS CLASH OF COUNTER-PUNCHERS
Alex de Minaur beat Japanese seventh seed Kei Nishikori 6-2 6-2 2-6 6-3 to reach the fourth round.
Nishikori made twice as many unforced errors as the Australian, who won nearly half his total points against the Japanese's serve and will face either Grigor Dimitrov or Poland's Kamil Majchrzak in the last 16.
1735 FEDERER THROUGH WITHOUT DROPPING A SET
After dropping the opening set in his first two matches at the U.S. Open, Roger Federer made quick work of Briton Dan Evans with a comfortable 6-2 6-2 6-1 victory, wrapping up the match in 79 minutes.
Evans was broken seven times by five-times champion Federer, who fired 10 aces and 48 winners at Arthur Ashe Stadium to cruise into the fourth round.
1719 PLISKOVA BATTLES PAST JABEUR
Czech third seed Karolina Pliskova was tested on a hot day by Tunisia's Ons Jabeur before triumphing 6-1 4-6 6-4 in a match that lasted two hours and eight minutes.
Jabeur took a medical time out midway through the match to have a knee injury looked at before storming back to claim the second set but Pliskova held on in the final set to move into the fourth round, converting seven break points in the match.
1508 PLAY UNDER WAY IN NEW YORK
Play began on Friday under bright sunshine with the temperature hovering around 25 degrees Celsius (77°F) and a forecast high of 31C. However, rain is expected later in the day.
(Compiled by Rohith Nair, Simon Jennings and Shrivathsa Sridhar in Bengaluru; Editing by Christian Radnedge/Pritha Sarkar/Emelia Sithole-Matarise/Amlan Chakraborty)