By Elaine Donnelly
Extending sexual misconduct to combat units

U.S. Open champion Andy Murray pulled out Tuesday because of a chronic back injury and will be replaced by a lucky loser.
Rafael Nadal wasn't too worried about playing on a hard court Monday night.

Nadal lost both the singles and doubles finals in the space of a few hours Sunday at the VTR Open in Chile. And Horacio Zeballos, who earned the first title of his career by beating Nadal in three sets, repeated what Nadal has been saying. "Not playing has hurt him," Zeballos said.
After seven months away treating a left knee injury, Rafael Nadal left many questions unanswered in his comeback tournament.

Nadal won in doubles on Tuesday with partner Juan Monaco, but the singles debut was a bigger test for the Spaniard and his injured left knee, which kept him away from the competitive game since June 28.
Rafael Nadal's ailing left knee may still bother him for a few more weeks, his coach said Monday.
French Open champion Li Na credits new coach Carlos Rodriguez with turning her tennis career around _ and saving her marriage.

The toughest sides of the men's and women's draws at the Australian Open are playing up to expectations. Now, a consequence of that smooth sailing is the likelihood of some semifinals being worthy of any Grand Slam title matches.

Novak Djokovic was all but perfect in his second-round match Wednesday against Ryan Harrison, beating the 20-year-old American 6-1, 6-2, 6-3 to stay on track for his third consecutive Australian Open title and the fourth of his career.
Samantha Stosur felt great before things started to spin out of control.
Maria Sharapova has made her Twitter debut at the Australian Open, and she's tweeting on THE trend of this year's tournament.
Men to watch at the Australian Open, which begins Monday:
Women to watch at the Australian Open, which begins Monday:
Novak Djokovic and former three-time French Open champion Gustavo Kuerten both scored in a charity soccer game played before a Brazilian league match in Rio de Janeiro on Sunday.
Novak Djokovic was in Rio de Janeiro on Friday for the opening of a tennis court in a shantytown and will go on to play a soccer match with some former Brazil stars.