Why did Ricky Carmichael retire?
Christopher Ramos
Updated on May 26, 2026
OUT OF ACTION: Supercross and Motorcross rider Ricky Carmichael is suffering from chronic fatigue syndrome. October 9, 2007 at 3:00 a.m. Ricky Carmichael has withdrawn from this weekend's U.S. Open of Supercross at the MGM Grand Garden Arena because he is suffering from chronic fatigue syndrome.