Promoter Bob Arum has just informed Boxingtalk.com that WBC heavyweight champion Vitali Klitschko has suffered a sprained right knee during training camp. So far, the injury, which will require Klitschko to wear a brace, has not postponed the bout for a fourth time. "When they called me yesterday, I got a hold of my man Tony Daly at the Clipper game and he got on it with me this morning. He suffered sprained ligament in his right knee. No tears, no swelling. It does require him to wear a brace on his knee and it's not going to effect his mobility. It's the same brace Matt Leinhart from USC and most other football players wear when they get this kind of injury."