Onyewu surgery successful, could miss up to six months

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Oguchi Onyewu's knee injury could leave his World Cup status in jeopardy for next summer. Onyewu, who suffered the injury in the dying minutes of the U.S.'s 2-2 tie against Costa Rica last week, went under the knife this week after tearing a tendon in his knee.

The surgery, completed by U.