US Open 2015: Roger Federer & Stan Wawrinka win

Seventeen-time Grand Slam champion Roger Federer did not face a single break point as he beat Frenchman Gasquet 6-3 6-3 6-1 in just 87 minutes.

Wawrinka made almost as short work of Andy Murray's conqueror Kevin Anderson, beating the South African 6-4 6-4 6-0.

Top seed Novak Djokovic will face holder Marin Cilic in the other semi.

Federer has won 16 of his 19 meetings with compatriot Wawrinka, but lost the most recent in this year's French Open quarter-finals and found his wife's courtside conduct called into question after a bad-tempered encounter at last year's World Tour Finals in London. 

However he said he was relishing the chance to meet his friend and Davis Cup team-mate in the last four.

"Stan played a wonderful match against me in Paris," he said.

"He can consistently bring the power on forehand, backhand, and serve out almost anybody when he gets hot.

"It is cool for us to have two Swiss in the semi-finals."

Anderson's win over Murray in the previous round was built on relentless aggression off the ground as well as his powerful serve, but he could replicate those tactics against Wawrinka.

Anderson hit less than half the number of aces and less than a third of the number of winners that he managed against Murray.

By contrast, Wawrinka put together his most impressive performance of the tournament after making relatively heavy weather of beating the likes of Albert Ramos-Vinolas and Hyeon Chung in the opening rounds.

"Stan didn't make it easy," admitted Anderson.

"He was taking time away from me. He was swinging out and I was just a step slow."

While Wawrinka insisted that his relationship with Federer off the court was still good, he claimed his countryman's demeanour on court had been changed by their increasingly competitive meetings.

"Before it was only me," said Wawrinka. "I was nervous because I knew I wasn't at his level, for sure.

"Now I think we can see that he was also nervous every time we play each other the past few years. That's a big difference, because that show how much he knows that I can play at his level."

Quotes of the day

"Seeing all those big serves coming down, meant I felt I had more time. " Roger Federer says that everything seems easier on return when compared to playing John Isner in the last round.

"I needed a shirt change after the 5th game the other night. Don't think Roger changed his shirt all match." John Isner returns the compliment on Twitter. 

"Hopefully nine to ten hours." - As well as clocking up time on the practice court, Federer advocates getting some serious sleeping done to reach the top.

(BBC)