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Switzerland's Roger Federer and Stanislas Wawrinka both went 0-2 in this weekend's Davis Cup tie against the United States. According to Federer, only one of them deserves blame. I'll give you a wild guess about who Federer believes was responsible for the surprising American sweep.

From the Associated Press, detailing Federer's statements to the French media after he and Wawrinka lost their doubles match to Mardy Fish and Bob Bryan on Saturday:

[Federer] claimed not to be too disappointed while pointing a finger at Wawrinka, who slumped back in his chair looking every inch the junior partner in the relationship.

"I played well enough in doubles, but Stanislas not so much," Federer said, adding that Wawrinka "didn't have his best match in singles. It's a shame, because of that defeat we weren't able to put the U.S under pressure."

In the parlance of reality shows, Wawrinka got thrown under the bus.

What Federer fails to mention is that after Wawrinka lost to Fish, he immediately went out and lost to John Isner, which was a much bigger defeat for the Swiss team.

Wawrinka is ranked No. 26. Fish is No. 8. Playing on clay and in front of a partisan crowd, the gap between the two wasn't as a big, but still; the loss wasn't exactly a stunner.

(Getty Images)Roger Federer looked like he wanted to be anywhere else in the world. Once he saw how good John Isner looked, he played like it too.

The 16-time Grand Slam champion was playing in a first-round Davis Cup tie for the first time in eight years and was doing so in front of his hometown fans in Firbourg, Switzerland. But a fast, sloppy clay surface left him frustrated before the match and Isner's powerful serve kept him that way during it, leading to a stunning four-set, 4-6, 6-3, 7-6 (4), 6-2 victory for the American.

It was the first time Federer had lost to an American on clay since 1999 and his first Davis Cup loss in 15 matches.

Isner's win gave the United States a 2-0 lead in the opening-round tie. Earlier in the day, Mardy Fish outlasted Stanislas Wawrinka in five sets, winning 9-7 in the last. The Americans are playing without an injured Andy Roddick and Bob Bryan, who is back in the states caring for his newborn daughter.

Federer got a break early in the first set and cruised to a 6-4 win. Despite 12 more break chances in the match, the world No. 3 wouldn't get another. Isner's serve was predictably solid, but he won the match on his passing shots and at the net. The uneven surface allowed the American to get behind shots and change angles, crossing up Federer countless times during their match.

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Caroline Wozniacki begins play in the Dubai Duty Free Tennis Championships on Feb. 20. Her boyfriend, Rory McIlroy, is in the United Arab Emirates this weekend playing in the Dubai Desert Classic. The convergence of sporting schedules provided the perfect opportunity for the young lovebirds to spend some quality time together, time that thankfully included a number of creepy photo opps in which Caro looks on as Rory plays a practice round.

[Related: Rory McIlroy once stalked Tiger Woods]

It's just the deception of photography, but in each of these photos, Wozniacki is the only spectator watching McIlroy. Is this a perk that is afforded to other golfers? Does Nick Watney's wife get to walk the course with him during a Wednesday round? And why is Caro standing so close to Rory on that chip shot? It was 77 degrees in Dubai on Tuesday; did she need the scarf? Does she ever take off that necklace?

(Getty Images)Patrick Mouratoglou is a world-renowned tennis coach. He runs the Mouratoglou Tennis Academy in France and is a frequent contributor to Busted Racquet.

Let's look back at the winner of the Australian Open and evaluate her position in women's tennis.

A new star is born

The Australian Open witnessed the birth of a new star of the game: Victoria Azarenka. This has been in the works for a long time. She's a former junior world champion and now she's now achieving all her potential. Due to her victory, she's now the new No. 1 in the world and she did it in grand style, clinching it by winning a major. During the event, she was mentally and physically stronger than the others. In the end, only Agnieszka Radwanska pushed her to three sets. Azarenka needed time to reach the top spot but she's now well settled in it because she has an all around game, is very steady mentally and also has a perfectly-controlled fitness preparation.

The Nadal of the WTA?

She reminds me of Rafael Nadal for many reasons. Her game style is based on high tempo and she makes few mistakes because of the use of topspin. Vika is the kind of player who tires her opponents because of her intensity, heavy ball and constant pressure. Her fighting spirit, her focus on each shot and the feeling that the rival has that to earn each point aids in this. Vika's fast, intense and covers a ton of ground. What is different than Nadal is that she likes to play inside the court and takes the ball early.

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The Spanish Tennis Federation is suing a French television station for running a sketch insinuating that Rafael Nadal uses performance-enhancing drugs.

A 60-second sketch on "Les Guignols" ("The Puppets") showed a man wearing a Nadal mask pulling into a gas station and filling up his vehicle with his own urine. A message at the end of the scene read, "Spanish athletes. They do not win by chance." The text was surrounded by logos of various Spanish sports federations.

Another sketch showed Nadal signing a book with a syringe.

The program aired on the same day that Spanish cyclist Alberto Contador was stripped of his 2010 Tour de France title for using PEDs. Videos are quickly being pulled from YouTube quickly

Since my knowledge of British law is limited to the inheritance discussions on "Downton Abbey," I can't speak to whether the Spanish Tennis Federation has a case. In the United States, this would clearly be considered a parody. Those Brits have some strange defamation laws, so

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In the 1990s, Arantxa Sanchez Vicario was the clay court queen of tennis, winning four Grand Slams and accumulating more than $60 million in earnings and endorsements. Today, the former world No. 1 says she has "nothing," the result of years of financial mismanagement by her mother and father.

Sanchez Vicario says her father put her on a strict budget during her career. She received a monthly allowance and assumed the rest was being invested.

As she claims in a new autobiography, excerpts of which were published this last weekend in the Spanish newspaper El Mundo, that's not what happened.

"My parents left me with nothing and now I am indebted to the [tax authorities] and I will not be quiet," she wrote. "My properties are worth a lot less than those of my brother Javier, who has earned a lot less than me. […] I never questioned the way my father managed my money. I have been a victim, I was duped."

Melissa Cook, the 14-year-old tennis fan who had Novak Djokovic's shirt snatched from her hands at the end of the Australian Open final, will get her souvenir after all.

The mother of two who grabbed the shirt that Djokovic intended to throw at the teenager put the garment up for auction earlier this week. It sold for $5,877. The winning bid was put in by Melissa Cook's mother.

Proceeds went to The Alannah and Madeline Foundation, a charity designed to help child victims of bullying.

Yael Rothschild put the shirt up for auction because she felt "abused and threatened," according to her husband.

"My wife has been vilified in the social media and by some traditional media as a result of misunderstanding over the shirt of Australian Open winner Novak Djokovic," he said. "Our home address has been broadcast on Facebook and this has led to personal abuse and even threats."

Except for the decision to donate proceeds to charity, none of this story is what you'd call uplifting. Rothschild

(Getty)Andy Murray has already improved under the tutelage of Ivan Lendl. Mentally, he was able to better deal with his frustration during the first rounds and played with will and authority. On returns, he's more inside the court and is keen on attacking his opponent. He's remaining on the baseline more too and doesn't get pushed back, even when he's in trouble.

All this pairing needs is time. Lendl is probably more in an position of observation so far and the coaching will come later. Like Roger Federer, Andy dropped physically in his semifinal. Knowing how professional and addicted to work Lendl is, there is no doubt that he will work on this fitness matter in the coming months. After that, the sky's the limit in Grand Slams.

To end the talk about this "big four," it has to be noticed that those players are very close from each other. We're probably witnessing the most intense top four in all of tennis history. So it's tough for the other members of the top 10 to come into this close circle. It's also interesting to point that this top 3 is even more tense because of some incompatibilities of their games: Novak Djokovic dominates Rafael Nadal who dominates Federer who is an issue for Nole.

- Tomas Berdych is improving, despite that loss to Nadal in Melbourne.

- Juan Martin Del Potro, who is back into the Top 10, will go on in climbing the ranking even if, for now, he lacks footwork and confidence against the top players.