By Rand Paul
Obama acts as though we no longer have a Constitution
Independent voices from the TWT Communities
Sam Stosur has withdrawn from her quarterfinal match against Angelique Kerber at the BNP Paribas Open because of a right calf injury.
Roberta Vinci advanced to the Dubai Championships semifinals by beating former U.S. Open champion Samantha Stosur 6-2, 6-4 Thursday.

Fifth-seeded Angelique Kerber has been ousted in the fourth round of the Australian Open by the woman who defeated Serena Williams at the same stage last year.

Novak Djokovic repelled a challenge from Radek Stepanek to advance to the fourth round of the Australian Open and still had plenty left over to unleash some stinging shots at Lance Armstrong after the doping-tainted cyclist's long-expected confession.

Angelique Kerber survived some nervous moments before fending off American teenager Madison Keys in the third round of the Australian Open, then got to blow out the candles on a cake to celebrate her 25th birthday.

Serena Williams extended her dominance over the top-ranked player in the world on Thursday, defeating Victoria Azarenka 6-4, 6-4 at the WTA Championships.
Serena Williams returns to the WTA Championships with the Wimbledon and U.S. Open titles, plus the Olympic gold medal, yet with no chance of finishing the year as the No. 1 in the world.
Top-ranked Victoria Azarenka withdrew from the Pan Pacific Open quarterfinals on Thursday, a day after experiencing dizziness in a third-round win over Italy's Roberta Vinci.
Roberta Vinci and Sara Errani planned to eat dinner together Monday and Tuesday, as usual.

At a U.S. Open that will be remembered for goodbyes by Andy Roddick and Kim Clijsters, another former No. 1 and Grand Slam champion, Venus Williams, left with a spirited second-round loss that felt nothing like a farewell.
Venus Williams' reinvigorating week ended with a bad back and gritty comeback that wasn't quite enough.

Playing Olympic tennis twice a day proved too much for Venus Williams. Her workload at Wimbledon will now be a little lighter.
Wimbledon finalist Agnieszka Radwanska canceled a news conference Friday because of a respiratory illness that made it difficult for her to speak.
Judging by results this year, Serena Williams shouldn't be considered the favorite among the four remaining women at Wimbledon.
While Maria Sharapova, the superstar, was having her photo snapped and walking down red carpets, Maria Sharapova, the tennis player, was grinding through a much less glamorous pursuit.
"I think if she played very well she can, yeah, beat also top players," Kerber said.