"The biggest thing here is Mark Clayton has been struggling with both knees," coach Steve Spagnuolo told the St. Louis Post-Dispatch after Thursday's practice. "I could see that he was, so I talked with him. "He's really been struggling. The knee that he had surgery on has been giving him a hard time. The other knee is starting to; he's starting to feel it, too."
Spagnuolo said Clayton tried to practice Wednesday but that he endured a lot of pain. The newspaper said arthroscopic surgery was being considered for one or both knees.