Former World No 1 Roger Federer scores a comprehensive victory over Jo-wilfried Tsonga and reaches to the semis of US Open 2011.  Federer tested Tsonga in rallies and waited for him to make the errors. The Swiss fired 5 aces and 29 winners and got benefitted from 34 unforced errors made by Frenchman. He will next face current World No 1 Novak Djokovic. 

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Federer Breaks! Well, that can be the decisive blow for Tsonga, who does well early on to save a couple of break points with the help of his quick serve but then commits a double-fault to find him in all sorts of trouble now. Well, Federer will serve now to win this duel. Its 5-3, third set. Can Tsonga break Federer in the next game?

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Federer gives a fitting reply to Frenchman Tsonga this time by reeling off an easy service game and keeps his nose in front. The Swiss hammers an exquisite backhand winner down the line and then extracts an error from the Frenchman with his probing serve. Its 4-3, third-set. 

Tsonga serves his way to a love-service holds and equalizes the proceedings. The Frenchman is doing it just right in this crucial third-set. Federer has not been able to find any chinks in Tsonga's armour in this crucial third set. Its 3-3, third set. No break of serve so far. 

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An intense service game, as Tsonga puts some pressure on Federer, but the Swiss ace shows the required resilience and smacks a quick winner to bring the deuce and then holds on to his serve with a huge Kick-serve. Federer keeps his nose in front in the third-set. Its 3-2, third set. 

Tsonga holds on to another easy service game and equalizes the proceedings in the crucial third-set. Its 2-2, third-set. Let's see who breaks first now!

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Federer continues to roll on with tremendous momentum here. Well, the Swiss ace reels off a second-consecutive love-service game here and races to a 2-1 lead in the third-set. 

Tsonga does well this time, as he rushes to the net and hammers a winner and then out-smarts Federer with a kick serve to hold on to his opening service game of the third-set. Its 1-1, third set. 

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Federer reels on a love-service game and makes an imposing start to the crucial third-set. Its 1-0, third set.  Tsonga will have to repeat his Wimbledon feat here to make a comeback from two sets down in the match. 

Federer won the second-set in 39 minutes, as he hammered 8 winners and earned 80% points on his first serve. The Swiss converts 3 out of 6 break points and Federer goes two set up in the match. Tsonga converted 1 out of 1 break point, but committed 16 unforced errors, which made it difficult for him to make a comeback into the second-set. Federer is one set away from securing his berth in semi-final here. 

Big serve does the job for Federer this time. Tsonga tries to pour some pressure with two big winners, but the Swiss brings in his probing serve into play and finishes on the second-set win. Its 5-3, second-set. Now, Tsonga will serve to stay alive in the second-set. 

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Tsonga reels off an easy service game this time and reduces the gap. A quick ace does the job for the Frenchman here. Its 3-4, second-set. Intense battle is on!

Tsonga breaks back! Fine counter-attack from the Frenchman here. Well, just when it looked that Federer will run away with the second-set, Tsonga breaks back and re-affirms his position in the second-set. Federer executes a fine drop-shot, but then messes up with an easy volley. Federer then sends a forehand long to return the favours. Its 2-4, second-set. 

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Double-break for Federer and now he looks in complete control in the second-set. The Frenchman commits three errors and opens up the floodgates, but saves two break points with a quick backhand and out-wide serve. But, then sends a forehand long to gift away the second-break to third-seeded Swiss, who now leads with a 4-1, second-set. Time is running out quickly for Tsonga in the second-set. 

Federer reels off an easy service game this time and extends his lead to 3-1 in the second-set. Fine serve and volley play from the Swiss ace this time, who is not allowing the Frenchman to get any freebies - at the moment. 

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Federer strikes! No half-measures from the Swiss ace this time, as he negotiates an easy serve to return a winner and then escalates the pressure on the Frenchman with a quick forehand winner. Well, the rest is done by Tsonga, who messes up with a forehand and gifts away the break to Federer, who leads with a 2-1 in the second-set. 

Federer holds on to a tricky service game this time and gets on board in the second-set. After a double-fault, the Swiss ace hammers an exquisite forehand down the line. Its 1-1, second-set. 

Tsonga does well this time, as he makes up for a double-fault with a quick forehand to extract and error from Federer and makes a fresh start here after losing the first set - on a tame note. 

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Federer took only 37 minutes to clinch the first set. After exchanging breaks early on in the first set, Federer earned the decisive one in the ninth game and then held on to his serve in the next game to go one set up in the match. Federer earned 67% points on his first serve, as he fired 7 winners and earned 31 points in total in the first set. Federer converted 2 out of 3 break points - to win the first set. 

Federer Breaks! Well, the third-seed gets a crucial break here and now he will serve to go one set up in the match. Tsonga invites trouble by committing three unforced errors and then messes up with an easy volley. Its 5-4, first set, Federer is just one game away from going one set up in the match. 

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Federer holds a quick one to 15 and squares the things at 4-4 in the opening set of the match.

Tsonga moves  Federer all around the court and slams winner from both side of wings to get ahead in the set with 4-3 scoreline.

Federer makes a couple of unforced errors in the game and allows Tsonga to break back in the set. Its 3-3 in the set.

Here we are, the rain has finally stopped and players have arrived on court. We should see the action soon !

Its pouring in at the moment and getting heavier with time. It would be quite a task for the match officials to restart the match here today, even if the rain stops now. Stay tuned, for the latest updates and to catch all the buzz from Flushing Meadows - only at TennisEarth! 

Its heavy rain at the moment and the forecast is not good. There is no respite for the match officials and players. The rain continues...

Rain continues, so is the frustration for fans and players! Its still drizzling and slightly getting heavier. 

Well, play has been suspended for a while now and players are heading towards the locker room. 

Match officials are scrutinizing the situation there. Players are waiting. Though, its not pouring in here, it can be dangerous for players to play on a wet court here. 

Slight drizzle interrupts the play. Players are still on the court. 

Tsonga gives a fitting reply this time, as he reels off a love-service game and keeps the damage limited to one break of serve. Its 2-3, first set. 

Federer holds on to an easy service game here and extends his lead to 3-1 in the first set. 

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Federer strikes! Well, the Swiss ace outruns Tsonga with a quick forehand winner and then hammers an exquisite forehand down the line to escalate the pressure. Contrastingly, Tsonga sends an easy forehand wide and allows Federer to break through. Its 2-1, first set.

Two quick serves and an unforced error from Tsonga, well the five time US Open cham Roger Federer makes a quite but comfortable start here. Its 1-1, first set. 

Tsonga makes a fine start to the match by holding on to a love-service game here. The Frenchman is serving very well out there. Its 1-0, first set. 

Both players arrive on court and start warming up for the occasion.

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Both players have contested seven matches before and Federer leads the head-to-head 4-3. The pair's previous two meetings, as stated earlier, were won by Tsonga including the most recent three set thriller in Montreal.

We bring you the shot by shot commentary of the next match, featuring Roger Federer and Jo-Wilfried Tsonga. 

Hello and welcome to the live match commentary of the 2011 US Open.