US Open PHOTOS: Wawrinka survives, Kyrgios out with injury

Images from Day 6 of the 2016 US Open tennis tournament in New York, on Saturday:

Wawrinka saves match point to beat unseeded Evans

Third seed Stan Wawrinka saved a match point at the US Open on Saturday before squeezing past unheralded Briton Dan Evans in five sets to reach the fourth round.

The Swiss faced match point at 5-6 in the fourth-set tiebreak but won it 10-8 and then raced through the final set to clinch a 4-6, 6-3, 6-7(6), 7-6(8), 6-2 victory.

"It was an unbelievable fight," Wawrinka said. "I'm for sure lucky to get through that match, saving match point. He played really great, he's really talented and he was really pushing me.

"To finish like that, I'm really happy to get through. It wasn't easy for me to find my best game."

World number 64 Evans, who was ranked as low as 772 in May of last year, stunned Wawrinka as he took the match to the two-time Grand Slam champion in a packed Louis Armstrong Stadium.

The 26-year-old, trying to reach the last 16 of a Grand Slam for the first time, broke in the 10th game to take the first set and though Wawrinka hit back to level the match, the Briton took the third in a tiebreak.

The pair traded breaks at the start of the fourth set but Evans, who surprised Wawrinka with his variety, had match point in the tiebreak as the crowd rose to their feet in anticipation of a massive upset.

But Wawrinka saved it with a volley winner, and that proved the last gasp for Evans as the Swiss, a semi-finalist in New York in two of the past three years, prevailed in the tiebreak and then dominated the fifth set.

The Swiss will next play the winner of the match between Australian Nick Kyrgios and Ilya Marchenko of Ukraine.

Frustrated Murray finds way past pesky Lorenzi

Flummoxed and frustrated by wily veteran Paolo Lorenzi for two sets, second seed Andy Murray changed tactics and beat the 34-year-old Italian at his own game to advance to the fourth round.

Murray was moping and muttering to himself as he pressed for winners against the steady Italian and piled up unforced errors before deciding to patiently play long rallies that enabled him to secure a 7-6(4), 5-7, 6-2, 6-3 win.

World number two Murray committed 47 errors in the first two sets, including 31 off his forehand, and converted only 4-of-12 break points before finding his form in the third set.

The 40th-ranked Lorenzi put up a gritty fight despite coming off a gruelling five-set, five-hour win over French 30th seed Gilles Simon in his second-round tilt.

The Scotsman's harder than expected three-hour 17-minute victory kept his golden summer moving forward after triumphs at Wimbledon and the Rio Olympics.

Radwanska rolls into fourth round, hungry for more

Agnieszka Radwanska registered an unusually comfortable third-round win over France's Caroline Garcia, but the Polish fourth seed hungers for more at Flushing Meadows.

Radwanska, who had been extended to three sets in three of her four matches against 25th seed Garcia, romped into the round of 16 with a 6-2, 6-3 victory in breezy conditions at Louis Armstrong Stadium.

It will be the 27-year-old Radwanska's fifth trip to the fourth round at the US Open but she has failed to advance beyond that stage in New York, unlike the other Grand Slams.

Radwanska was runner-up to Serena Williams at Wimbledon in 2012, becoming the first grand slam finalist from Poland in the Open era. She is a twice semi-finalist at the Australian Open and has reached the quarter-finals at Roland Garros.

"That means everything," Radwanska said on court about her goal to go deeper into the year's last grand slam championship.

"I hope I can play even better than today in the next round and reach my first quarter-final here."

Kyrgios ends US Open with hip injury

A tearful Nick Kyrgios, a dark horse to win the US Open, retired from his third-round match against Ukraine's Illya Marchenko with a hip injury on Saturday, ending the Australian's bid for a maiden Grand Slam.

A limping Kyrgios was trailing 4-6, 6-4, 6-1 when he decided he was unable to carry on playing. The 14th seed was seeking to reach the last 16 at Flushing Meadows for the first time.

"It's tough, I don't like to retire, that is probably the second or third time I've done it," offered a dejected Kyrgios.

"I've got a lot of belief in my game to still win matches when I'm not feeling great but his (Marchenko's) strength is to make balls and move me around, it's not great.

"To be fair my hip was bothering me my first two matches and I got through, so I guess it was just a matter of time."

Thiem earns birthday present with four-set win

Eighth seed Dominic Thiem was serenaded by the crowd as he celebrated his 23rd birthday with a gruelling 1-6, 6-4, 6-4, 7-5 victory over Pablo Carreno Busta of Spain in the third round.

The Austrian was pushed hard, especially in the fourth set, but held on to seal a victory which was followed by a rendition of Happy Birthday by the Grandstand Court fans.

“It was a big pleasure to play on Grandstand on my birthday, against a very tough opponent,” Thiem said.

“I had a bad start so I tried to focus on the second set. Then (in the fourth set), I was twice up a break and he played amazing games to break back so I am very happy to win.”

The victory equals Thiem’s previous best performance in New York and he now plays former champion Juan Martin del Potro for a place in the quarter-finals.