VANCOUVER, B.C. — Hope Solo has an ailing leg, the result of some extra work she was putting in to get back into playing shape after "Dancing With the Stars."

The timing isn't the greatest. The U.S. women's soccer team is about to play the game that determines whether it goes to the Olympics.

"We have to make a decision whether she is 100 percent to go or not," coach Pia Sundhage said Wednesday. "And if she isn't, we have a tremendous backup goalkeeper."

The United States plays Costa Rica on Friday in the semifinals of the CONCACAF Olympic qualifying tournament. The winner goes to London, the loser stays home for the summer.

Solo was clutching her right leg during the Americans' 4-0 win over Mexico on Tuesday and was wearing an ice pack on the leg after the game. She said she had a "little quad pull" and added later on Twitter that she first tweaked the leg the morning of the Guatemala game on Sunday.

Solo aggravated the injury in the first half against Mexico and said afterward she was "a little worried" that she was going to leave the game for a substitute. On Wednesday, she tweeted a photo of her right leg undergoing what appeared to be acupuncture.

"Got an extra day 2 get this leg right! Thank God i have the best trainers!" she tweeted.

Solo has said she lost some of her muscle strength during her two-month run on "Dancing With the Stars," an appearance that capitalized on the U.S. team's popularity after last summer's World Cup. She finished in fourth place with partner Maksim Chmerkovskiy, but the moves involved in executing the perfect cha-cha aren't the same as the ones needed to stop a header at the far post.

Solo has played every minute of the Americans' three games at the tournament, but she hasn't had to do much. The U.S. team has outscored its opponents 31-0, and Solo didn't have to make a save against Mexico.

And, on paper at least, a less-than-100-percent Solo or backup Nicole Barnhart should be more than enough to hold off Costa Rica. Las Ticas are ranked No. 41 in the world and have never beaten the U.S.

American men win

Graham Zusi scored his first international goal in the eighth minute and the United States men beat Panama 1-0 in an exhibition game in Panama City for their third straight win.

Using mostly backups while the regulars remained with their European clubs and playing nearly the entire second half a man short, the Americans evened their record at 4-4-1 under Jurgen Klinsmann, who replaced Bob Bradley as coach last summer.