Andrew Duran underwent arthroscopic surgery on his right knee Thursday, and will be out 4-6 weeks. The Seattle Sounders first-round pick apparently hurt himself in an earlier training session, but it recently reached a point where it became apparent that something needed to be done. Duran had previously suffered a knee injury in 2010 that resulted in him being granted a medical redshirt for that season.

"He had an old surgery where they had to sew the meniscus together," Sounders coach Sigi Schmid said. "It basically re-tore at the same spot. It was time to just take it out."

The injury has to be seen as a bit of a setback for Duran, although it shouldn't have a huge effect on the Sounders. Duran was most likely the No. 4 centerback behind Patrick Ianni and was probably the third option at right back behind Zach Scott.

In other injury news, the Sounders are apparently close to having a final decision on O'Brian White. Schmid said the team has been gathering opinions regarding his blood-clotting condition. The Sounders have until March 17 -- their first MLS match -- to decide whether or not to buy out his contract.