Stephen Curry's status uncertain

MADRID, Spain -- Stephen Curry sprained his left ankle Wednesday at Team USA's practice, an injury that looked bad when it happened but was later described as relatively minor.

Curry landed on a teammate's foot during a scrimmage and immediately went down, and those who witnessed it said the injury initially appeared serious.

"I think he was a little scared," coach Mike Krzyzewski told ESPN.com.

But the team's athletic trainers later told the coaching staff there was no structural damage to the ankle, and Krzyzewski said he had "no idea" if Curry would be available for practice Thursday -- two days before the United States plays Lithuania in its first exhibition game this summer outside of the United States.

Curry, the runner-up in NBA rookie of the year voting last season, is one of three guards -- the others being Eric Gordon and Russell Westbrook -- battling for the 12th roster spot for the world championship in Turkey, which begins Aug. 28. The team is currently carrying 13 players, and a final roster does not have to be announced until 48 hours before the tournament in Turkey begins.

Curry's injury is one of several maladies to strike the team since it first gathered for minicamp in mid-July in Las Vegas. David Lee withdrew from the team after dislocating his middle finger, and Amare Stoudemire pulled out on the eve of camp when the New York Knicks could not procure insurance for his contract,

Robin Lopez also withdrew prior to minicamp to rehabilitate a bad back, and Brook Lopez pulled out between minicamp and training camp in New York as he continues to recover from a bout with mononucleosis.

Of the players still on the roster, Kevin Love has been hampered by a sore calf, and Danny Granger missed practices with a bruised thigh and a jammed finger.

The U.S. team is spending six days in Madrid and also will play Saturday against Spain. The U.S. then goes to Athens, where it will play the Greek national team before traveling to Istanbul.

Team USA's first game in the world championship is Aug. 28 vs. Croatia.

Chris Sheridan covers the NBA for ESPN.com.