Ryan Clark Launches Program To Combat Sickle Cell DiseaseFlanked by doctors and patients, the Steelers safety, Ryan Clark unveiled Ryan Clark's Cure League.
Steelers Will Face Broncos Without Ryan ClarkWhen the Steelers take the field at Mile High Stadium Sunday, they will do so without starting safety Ryan Clark. Back in 2007 when the Steelers played the Broncos in Denver, Clark’s sickle cell trait caused him to become ill because of the high altitude.

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