Federer rallies; Djokovic wilts
MELBOURNE, Australia -- Top-seeded Roger Federer overcame an awkward start to win 13 straight games and beat Nikolay Davydenko 2-6, 6-3, 6-0, 7-5 to reach the semifinals for a 23rd straight Grand Slam.
Novak Djokovic, who beat Federer in the semifinals here two years ago en route to the title, was beaten by the man he defeated that year, Jo-Wilfried Tsonga of France, in a later quarterfinal.

Tsonga beat Djokovic 7-6 (8), 6-7 (5), 1-6, 6-3, 6-1 in a near four-hour match and will play Federer in a semifinal Friday. Djokovic appeared to be affected by breathing difficulties and stomach problems during part of the match and took a medical timeout trailing 2-0 in the fourth set.
Djokovic said he had an upset stomach before the match, probably as a result of something he ate.
"I had to go to the toilet otherwise I would have thrown up on court," Djokovic said. "When you lose a lot of fluids, your engines stop working and that's how I felt."
Tsonga said he wasn't sure how much the illness affected Djokovic.
"He had a little bit of a stomach problem," Tsonga said. "It's strange because sometimes he doesn't play the point, and when it starts to become important he plays."
Last year, Djokovic retired in the fourth set of his quarterfinal against Andy Roddick with a heat-related illness, but the weather conditions Wednesday night were cool and breezy.
Andy Murray and Marin Cilic are already through to the semis and will play Thursday night.
Federer is impressed with his Grand Slam semifinal streak.
"It's incredible, looking back on how many years that is now, I'm able to deliver at Grand Slam play," Federer said. "For some reason I was just a bit worried I was not going to make it this time in the semis.
"Now obviously that it's safe again and I've been able to add one. Definitely one of the most incredible things I have in my résumé."
Federer's victory snapped a 13-match Davydenko winning streak after the Russian won the season-ending ATP World Finals in November at London and his 20th career title in Doha earlier this month.
"I've played him many times before, and I know he goes through ... some rock-solid phases at times," Federer said. "I just tried to stay positive."
Davydenko, who thumped his first three opponents before grinding a five-set victory over Fernando Verdasco, was immaculate early, breaking Federer three times to wrap up the first set and race to a 3-1 lead in the second.

Having declared the top 10 players were "scared" of him after winning the season-ending ATP Tour Finals in London, Davydenko appeared determined to live up to his self-proclaimed reputation, dictating the play and thumping winners from all angles.
The bravado disappeared quickly, however, when given four chances to take a two-break lead, the Russian blew them all, following a double fault with three consecutive unforced errors.
Federer, sensing the momentum shift, pounced.
At the end of a breathtaking half-hour of near faultless shot-making, the Swiss master emerged a set up with a 2-0 lead in the fourth, while Davydenko was left reeling.
As both players struggled to deal with the dipping sun that left one side of the court plunged in darkness and the other brightly lit, Davydenko rallied, firing three crisply hit winners in a row to save match point and break back to 5-5.
"I was like asking 'why now?' He could have played those at another time when it wasn't important," said Federer, who was beaten in last year's final by Rafa Nadal.
The 15-time Grand Slam champion bided his time, however, to take the break back, then dispatched the Russian with a thumping serve after setting up match point with an ace.
"Pissed off? What else," Davydenko replied when asked how he felt about his play during Federer's run of successive games.
"But what else [could I do]? Bad luck. [I'll] go home tomorrow [and] relax."
Information from The Associated Press and Reuters was used in this report.
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2010 AUSTRALIAN OPEN
Women's singles: Serena Williams, United States
Men's singles:
Roger Federer, Switzerland
Men's doubles: Bob and Mike Bryan, United States
Women's doubles: Serena and Venus Williams, United States
Mixed doubles: Cara Black/Leander Paes
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Day 14
- Federer beats Murray for 16th Slam title
- Ubha: Federer's racket did the talking
- Ubha: Things learned from Federer-Murray
- Federer wins Aussie in straight sets

- Murray breaks down during speech

- Federer's podium speech

Day 13
- Serena beats Henin to win Aussie title
- Hewitt has hip surgery, hopeful for French
- Bryan brothers capture fourth Aussie title
- Ubha: A new beginning indeed for Serena
- Ubha: Five things we learned from the final
- Ubha: Federer, Murray cool as a cucumber
- Ubha: Why both Fed and Murray can win
- Bodo: Murray may have the ad
- Serena wins Aussie Open

- Serena accepts trophy

- Serena's thoughts on win

- Henin falls just short in final

- Digital Serve: Who will win the final?

- Federer-Murray final preview

Day 12
- Federer routs Tsonga to reach final
- Ubha: That Federer is a pretty savvy guy
- Ubha: Can Henin blunt stronger Serena?
- Ubha: Rasons why Henin, Serena can win
- Bodo: Henin's last step in comeback
- Injured Nadal to miss at least 4 weeks
- Williams sisters win doubles title
- Players auction rackets to raise Haiti funds
- Murray-Cilic court crasher to face charges
- Federer rips Tsonga

- Federer's thoughts on win

- Who has the edge, Federer or Murray?

- Rinaldi feature: Seven the hard way

- Williams sisters win doubles title

- Who will win the Serena-Hennin match?

Day 11
- Men | Women
- Ubha: Despite roadblocks, Henin in final
- Ubha: Murray displaying flashes of brilliance
- Ubha: Tsonga winning with aplomb
- Serena reaches Aussie final

- Henin cruises to final

- Serena's thoughts on win

- Henin feeling good with form

- Digital Serve: Federer-Tsonga preview

- Murray takes care of Cilic

- Murray's thoughts on win

- Serena-Henin preview

Day 10
- Men | Women
- Ubha: Tale of two Williams sisters
- Ubha: The real Federer returns
- Ubha: Vetting the Down Under semifinalists
- Venus Williams falls to Li Na

- Federer holds off Davydenko

- Tsonga holds off Djoker in five

- Women's semifinal preview

Day 9
- Men | Women
- Ubha: Cilic can compete with big boys
- Ubha: Let's give Murray his due justice
- Ubha: History on Henin's side?
- Ubha: No Djoking around for Tsonga in Oz
- Ubha: Here's who has threatened Fed
- Cilic takes down Rafa in five

- Henin advances to Aussie semis

- Nadal retires versus Murray

- Nadal on retirement

- Henin advances to Aussie semis

- Always being hunted: Roger Federer

Day 8
- Men | Women
- Ubha: Federer continues to torment Hewitt
- Ubha: Time now for Murray to win Slam
- Ubha: Ranking the quarterfinalist
- Ubha: Australian Open Day 9 preview
- Venus Williams wins in three sets

- Day 9 preview

- Federer thwarts Hewitt

- Serena into quarterfinals

- Tsonga, Davydenko win in five

Day 7
- Men | Women
- Roddick beats Gonzo in five

- Roddick's thoughts on win

- Cilic takes down del Potro

- Nadal beats Dr. Ivo

- Murray mauls Isner

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