[QUOTE=Ray Ray19;3518227]Isn't this the guy that has some sort of a condition that doesn't allow him to play in Denver?
Something about the thin air that does something to his respiratory system?
That would put up red flags for me.[/QUOTE]
Yep sickle cell..
[QUOTE]Clark suffers from sickle-cell trait, which can cause complications during extreme exercise conditions and hypoxia from high altitudes.[/QUOTE]