Stan Wawrinka, Roger Federer and Andy Murray cruised into the round of 16 in the US Open 2015 after straight set victories over their respective third round opponents.

Federer has continued his 2015 US Open dominance with some quality tennis against Philipp Kohlschreiber, who suffered his 10th loss against the Swiss maestro, was helpless with Fedex skills on the court.

Federer came into the US Open with full confidence after an inspiring win against Novak Djokovic in the finals of the Cincinnati Masters prior to the last grand slam of the year. The former world number one has been in tremendous form this US Open as he has not dropped a single set, neither he looked in discomfort.

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If the Swiss ace plays such quality tennis in the second week of the US Open as well, it is going to be no surprise to see Federer lift the title for the sixth time. He faces John Isner from the US in the round of 16.

Isner, who too has not lost any set in the competition so far, feels it is going to be fun to face Federer.

"It's going to be fun," ATP official website quoted Isner as saying. "It's what I work so hard for, to get an opportunity like this. On Monday I'm going to have fun with it. At the same time, I'm going to go out there and believe that I can win the match.

However, other singles players in the fray, such as Novak Djokovic, Murray and Wawrinka have also showed some fine form.

Murray, who showed a lot of character to come from two sets down in the second round against Adrian Mannarino, had it under his control in the third round against Brazil's Thomaz Bellucci. The Scot won the game 6-3, 6-2, 7-5. His game from the baseline was impressive.

Murray will face 14th seed Kevin Anderson in the next round.

Another major contender, Stan Wawrinka has won all his matches in straight sets, but has been severely tested. The Swiss player with his fighting spirit overcame all challenges thrown at him in the third round as well, as he defeated opponent Rubens Bemmelmans 6-3, 7-6 (7/5), 6-4 to book a last 16 spot, where the fourth seed will face local player David Young, who will be egged on by the home crowd.