Five-times champion Federer powered his way past Spains Roberto Bautista 6-4, 6-3, 6-2, the 33-year-old raising his record on Arthur Ashe Stadium court to a dazzling 25-1.
Facing Federer for the first time, the 26-year-old Spaniard quickly found himself 5-1 down in the opening set to the 17-time Grand Slam winner, who then eased off the gas and coasted to an unflustered straight sets win in just under two hours.
On another sweltering day at the US National Tennis Center, three emerging talents and potential Grand Slam winners of the future were finally ushered to the Flushing Meadows exit.
Chinese doubles specialist Peng Shuai routed 17-year-old Belinda Bencic 6-2, 6-1, Tomas Berdych thrashed 20-year-old Austrian Dominic Thiem 6-1, 6-2, 6-4, and Frenchman Gael Monfils schooled 23-year Bulgarian Grigor Dimitrov 7-5, 7-6(6), 7-5.
Monfils put aside his showman antics for a more workmanlike approach to his fourth round match and it resulted in victory over the player dubbed Baby Fed for his all-around game that resembles Swiss maestro Federers.
Frenchman Monfils, seeded 20th, returns to the quarterfinals for the first time since 2010 for a date with Federer.
Hes got easy top 10 potential, said Federer of Monfils, who has yet to drop a set. Hes a great mover. Hes got a wonderful serve, really, which nobody really talks about because of his athletic movement which stands out so much. His issues have really been just his fitness and his setbacks hes had because of injury. Then sometimes maybe not wanting to play sometimes because of reasons only he can explain.I think I can speak on behalf of so many players: We love watching him play.
It was not all joy for the French contingent on Tuesday with Gilles Simon losing to big-serving Croat Marin Cilic.
Cilic and Simon have played a combined 49 five-setters in their careers so it was no surprise that Tuesdays meeting between the two went the distance. Cilic had won a five-set marathon over Simon earlier this year at the Australian Open and it was the 14th seeded Croatian coming out on top again 5-7 7-6(3) 6-4 3-6 6-3.
While Cilic and Simon battled it out for over four hours in the heat, Federer, Monfils, Berdych, Peng and 10th seed Caroline Wozniacki conserved energy by registering straight-sets wins.
Peng, 28, delivered a 64-minute master class to 2013 junior World No.1 Bencic in an unlikely quarter-final between unseeded players.
The Chinese had rattled off three impressive upsets in a row from the second round, ousting fourth seed Agnieszka Radwanska, 28th seed Roberta Vinci and 14th-seeded Lucie Safarova, on her way to reaching her first Grand Slam singles semifinal in 37 attempts. This is amazing time for me, said Peng, who has won 16 doubles titles, including this years French Open, but is still chasing her first singles crown. A lot of tennis. Its a long time, the career. Its tough sometimes. Im thinking to give up and stop play because I dont know if I can make it or not.
Peng will next meet former World No.1 Wozniacki, who used her aggressive groundstroke game to near perfection in a 6-0, 6-1 victory over Italys Sara Errani. The 10th-seeded Dane, engaging Errani in long baseline rallies but using superior power to open up the court and find lanes for blasting home winners, roared to victory in a brisk 65 minutes.
results: Men: (Round 4) 2-Roger Federer bt 17-Roberto Bautista 6-4, 6-3, 6-2; 20-Gael Monfils bt 7-Grigor Dimitrov 7-5, 7-6(6), 7-5; 6-Tomas Berdych bt Dominic Thiem 6-1, 6-2, 6-4; 14-Marin Cilic bt 26-Gilles Simon 5-7, 7-6(3), 6-4, 3-6, 6-3
Women: (Quarterfinals): 10-Caroline Wozniacki (10) bt 13-Sara Errani 6-0, 6-1; Peng Shuai bt Belinda Bencic 6-2, 6-1.