Day 10 of the 2012 U.S. Open is almost complete, with just the Roger Federer and Tomas Berdych quarterfinal still incomplete.
The women's semifinals have been set and we're starting to get a great picture of what the men's draw is going to look like this season.
Let's take a look how the top stars performed on Day 10.
Andy Murray: B+
After dropping the first set against Marian Cilic, No. 3 seed Andy Murray fought back well to level the match at one set apiece, before running away with the third and fourth sets in dominant fashion to book his place in the final four of the competition.
The Brit only landed 55 percent of his first serve, but was dominant when facing Cilic's serve—winning 46 percent of the Croatian's service points en route to the four-set victory.
With just 31 unforced errors, Murray was solid and walked away with a deserved victory, but you get the feeling that he'll definitely have to improve both his service game and his break-point conversion rate if he has any chance of progressing through to the 2012 U.S. Open final.
Novak Djokovic: A-
If there were any doubts about Novak Djokovic still being the man to beat on the bottom half of the draw, then his dominant 6-4, 6-1, 3-1 (ret.) victory over Stanislas Wawrinka proved that he is indeed the biggest danger to world No. 1 Roger Federer.
It took Djokovic just over an hour-and-a-half to book himself a place in the quarterfinals by winning half of Wawrinka's service points and converting an excellent 86 percent of his break-point opportunities.
His unforced errors through the three sets reached just 20, and whilst you could argue that his serve could have been a little more efficient, it was hard to argue against anything other than a very good grade for the Serbian international here.
In a straight-set victory over Ana Ivanovic that sent her through to the semifinals, Serena Williams proved to the world that she means business at the 2012 U.S. Open—if you didn't know so already.
With the home crowd behind her, Williams smashed 12 aces and won 90 percent of her service points, all whilst winning 45 percent of Ivanovic's service points also. Throw into that 26 winners and just 14 unforced errors, and it's clear that Williams will be tough to beat for the Grand Slam title at Flushing Meadows this year.
Was this the best performance that we've ever seen from Russian international Maria Sharapova? Absolutely not, but at the end of the day, Sharapova did what needed to be done to book her place in the final four at Flushing Meadows.
The standout for Sharapova was her 44 winners, but her service game will need to be much better in the semifinals if she is to advance through to the Grand Slam final. Her second serve, in particular, yielded just a 39 percent win rate and something that she will need to improve.
Having said all of that, to come from a set down when you're not playing your best tennis is a testament to the character and class of Sharapova, and perhaps an indication that she believes she can go all the way at the 2012 U.S. Open.
What did you make of their performances on Day 10?
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All statistics courtesy of U.S. Open official website.