Simple for Serena Williams

  • Last Updated: September 6 2012, 6:56 BST

A review of the women's singles action on day 10 of the US Open, including a win for Serena Williams.

  • Serena Williams: Now faces Sara Errani
  • Maria Sharapova: Won 3-6 6-3 6-4 

Williams breezed into the semi-finals of the US Open with an emphatic straight-sets victory over Ana Ivanovic at Flushing Meadows.

The American, who sent an ominous warning to her rivals on Monday with a 'double bagel' win over Andrea Hlavackova.

And she hardly gave the 12th-seeded Serbian a look-in on Arthur Ashe Stadium as she powered to a 6-1 6-3 triumph in just 58 minutes.

Williams, 30, is the favourite to win a fourth US Open crown after her stellar summer that brought victory at Wimbledon and two Olympic gold medals.

And she wasted no time in asserting her authority over former world number one Ivanovic, racing into a 3-0 lead before the 24-year-old got a game on the board.

That came courtesy only of a fortuitous half-volley, but proved only temporary respite as 14-time Grand Slam singles winner Williams cruised through the remainder of the set - clinching it in just 25 minutes.

An early break for Williams in the second set saw the match continue in the same vein as Ivanovic, contesting her first major quarter-final since her 2008 French Open triumph, struggled to contain the three-time former champion.

Another break swiftly followed as Williams, runner-up to Australia's Sam Stosur at last year's tournament, completed another impressive win.

"I think I came out really strong," Williams said in a courtside interview.

"Playing against someone like Ana, a former world number one, you really have to play amazing tennis."

The fourth seed will face Italy's Sara Errani in the last four, the 10th seed having earlier continued her remarkable season by beating best friend and doubles partner Roberta Vinci 6-2 6-4.

The 10th seed, who has also won four titles on the WTA Tour this season, did not celebrate her win and instead exchanged a long hug with her friend at the net.

The Italian pair have also had a brilliant season together, and their quarter-final victory in women's doubles on Tuesday ensured Errani will be the new world number one in doubles, with Vinci just behind her.

They won their first Grand Slam title at the French Open and also reached the final in Australia.

Maria Sharapova maintained her remarkable record in deciding sets to defeat Marion Bartoli and reach the semi-finals for the first time since winning the title six years ago.

Not since her third-round loss to Flavia Pennetta here 12 months ago has Sharapova lost a three-set match, winning 12 out of 12 this season.

She was pushed to the limit by Bartoli, who had led 4-0 when rain forced the match to be postponed on Tuesday, but eventually came through 3-6 6-3 6-4 to set up a meeting with world number one Victoria Azarenka.

Rain had come to Sharapova's aid in her fourth-round match against Nadia Petrova when she had looked in trouble early in the deciding set, and the Russian certainly would not have been disappointed by yesterday's abrupt halt.

Bartoli had completely outplayed her rival for four games but the question was whether she would be able to maintain it.

The initial signs were not good for the Frenchwoman as Sharapova won the first two games on the resumption, which was again twice delayed by more heavy showers.

But Bartoli held on to her advantage from there and served out the set, letting out a loud yell of 'allez' as Sharapova netted a forehand return.

It was the first set 11th seed Bartoli had won against the Russian in five matches, although this was only their second meeting in five years.

Both players were struggling on serve and, after exchanging breaks at the start of the second set, their combined tally of double faults was up to 12, seven of them to Sharapova.

The Russian came under severe pressure again in the third game of the set but saved four break points, and it was a key moment as she gradually began to take control.

The third seed broke again to lead 5-3 with a forehand winner drilled down the line and levelled the match with her fifth ace.

Sharapova really had the bit between her teeth and she broke the Bartoli serve to lead 2-1 in the decider only for the Frenchwoman to hit back.

It was an epic struggle but Sharapova struck a major blow in the ninth game with another break, leaving her serving for a place in the last four.

And she did not falter, keeping alive her hopes of a second grand slam title of the year after completing her career slam at the French Open in June.

Sharapova said: "The rain break gave me a few hours to think about things. I came out so flat yesterday. She's so tough and she was on fire. I'm so happy to get back to the semi-finals."