i think it's just a black genetic thing. they always get more cardiovascular and circulatory disease, blood clots especially i think are like 60% higher in blacks than Whites. but high blood pressure, diabetes, sickle cell, all that stuff is much more common in blacks. he probably just has some gene that causes him to clot too much, same with the other seemingly healthy black athletes that this seems to happen to more. but, as we know, they're "genetically superior" to us and must replace us in every facet of life. dem specimens, am i right?