Wawrinka dismantles Anderson

Stan Wawrinka sauntered into the US Open semi-finals after hammering Kevin Anderson 6-4, 6-4, 6-0 on Wednesday night.

Anderson entered the match on a high after downing third seed Andy Murray in the fourth round, and having beaten Wawrinka in their last four encounters, the South African would have felt he was in with a chance against the Swiss, but he was horribly wrong.

Wawrinka was on top form against an opponent who seemed to be tiring after a demanding build-up and a taxing fourth round encounter, making just 15 unforced errors across three sets.

Anderson's serve is so often his primary weapon, but it went missing at Louis Armstrong Stadium on Wednesday, the 15th seed finding the target with just 57 percent of first serves and slumping to nine double faults.

It was his third double fault at 15-40 in the seventh game that gave Wawrinka the first break, and while the world number five had to see off a break point chance in the proceeding game, he would stand firm to take the set 6-4.

Wawrinka continued to apply pressure on the Anderson serve and with the South African plagued by unforced errors, he was under considerable duress in the fifth game of the second set before holding. Under the cosh again in the ninth game, Anderson afforded Wawrinka two break point opportunities and the Swiss needed just one to take the break, with the set coming a game later.

Anderson never looked like launching a comeback, and any hopes of one were all but destroyed when Wawrinka broke in the opening game of the third set. After holding serve to love, Wawrinka broke again in the third game; Anderson was down and out and waiting for the bell to ring.

Wawrinka needed just 25 minutes to wrap up the third set 6-0 and with it the match, to progress to his first US Open semi-final.

Compatriot Roger Federer awaits Wawrinka in the semi-finals after the second seed secured a comprehensive straight-sets victory over Richard Gasquet.