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Serena Williams edges out Tsvetana Pironkova to reach US Open semi-finals against Victoria Azarenka

The 23-time Grand Slam champion will face old foe Victoria Azarenka in the semi-finals

Serena Williams
Image: Serena Williams stayed on course to match Margaret Court's all-time record of 24 Grand Slam singles titles

Serena Williams fought back from a set and a break down to beat Tsvetana Pironkova and progress into the semi-finals of the US Open where she will face Victoria Azarenka.

The six-time champion had to do things the hard way to secure the 4-6 6-3 6-2 victory and continue her quest for a record-equalling 24th Grand Slam title, while Azarenka returned to the US Open semi-finals for the first time since 2013 by overwhelming Elise Mertens 6-1 6-0.

Pironkova, who entered unseeded and unranked after taking a three-year break from tennis to start a family, lost just five points on her serve in the opening set.

Earlier in the tournament, Williams admitted managing the pressure that is heaped on her shoulders is a challenge.

"Sometimes it's harder than others. Every day having 'Serena' on your back is a massive target for the tour, for press, for stress," she said. "But as Billie Jean King said, pressure is a privilege. So, I wouldn't want it any other way."

As was the case against Sloane Stephens in the third round, Williams looked edgy at the start of the encounter.

Despite having won 105 matches at the US Open during her career, she found it tough going against Pironkova.

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Tsvetana Pironkova will face Serena Williams for a place in the last four
Image: Pironkova has enjoyed an exceptional return to the WTA tour

The Bulgarian used her sliced forehand to disrupt Williams and despite having heavy strapping on her left leg, raced all over the court.

Pironkova looked in control as she broke Williams to lead 3-2 and lost just five points on her serve during the first set.

After a slow start to the second set, Williams settled as it went on and started to use her power to finish the rallies earlier.

As she started to find her intensity, the match began to turn and nine second-set aces went a long way towards Williams securing it 6-3.

Serena Williams
Image: Williams hit 20 aces during the match

In the final set, Pironkova, who used her protected ranking to enter the main draw, allowed some unforced errors to creep into her game. Williams took advantage and afterwards was pleased with her work.

"I was feeling it a little bit in my legs [early on]. For whatever reason, about an hour in I got some more energy," she said.

"I'm going to try to figure that out. I play again on Thursday and I guess the good thing is that I'm used to playing back to back, to back.

"I kept fighting and that's one thing I'm super excited about," she said. "I never give up and I've got to keep on going."

The US Open has become the mother of all Slams
The US Open has become the mother of all Slams

Mum's the word at this year's US Open with the likes of Olympia, Alexander and Leo enjoying watching their heroes in action at Flushing Meadows.

The women's singles quarter-final stage featured three mothers - Williams, Pironkova and Azarenka - and the American explained how it felt to face a fellow mother in the latter stages of a Slam.

"It just shows me how tough moms are, when you birth a baby it shows me that you can do anything," Williams said.

"You play a match, then you go home and you're still changing diapers. It's like a double life, it's really surreal.

"She played unbelievably today," Williams added about Pironkova. "She's incredible."

Victoria Azarenka of Belarus celebrates a point during her Women’s Singles quarter-finals match against Elise Mertens of Belgium on Day Ten of the 2020 US Open at the USTA Billie Jean King National Tennis Center on September 9, 2020 in the Queens borough of New York City
Image: Victoria Azarenka clobbered Elise Mertens to set up showdown with Serena

Azarenka, 31, set up the semi-final clash against Williams with a demolition job against Belgium's 16th seed Mertens.

She spread the court with 21 winners to dominate Mertens in their first career meeting.

"I don't think I have ever enjoyed tennis, to be quite honest," she said.

"I felt that it was a job and something you were meant to do. Winning, you enjoy it. Losing, I was so upset and for a couple of days I couldn't function normally.

"Now nothing bothers me. I can say I am feeling the moment."

Williams leads her head-to-head series against Azarenka 18-4, including beating her in the 2012 and 2013 finals in New York.

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