Pittsburgh Steelers coach Mike Tomlin on Tuesday said he will not allow safety Ryan Clark to play in Sunday's AFC wild-card game in Denver against the Broncos out of fear for Clark's health. Clark has sickle cell trait, a condition that can be problematic in the high altitude of Denver. In a 2007 game there, Clark became violently ill and lost his spleen and gallbladder in addition to losing 30 pounds because of deprivation of oxygen to his major organs.
