Quarterback Peyton Manning missed the entire 2011 season with a damaged nerve that caused weakness in his right arm and required multiple neck surgeries, including a single-level fusion. (AP Photo/AJ Mast, File)
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Quarterback Peyton Manning missed the entire 2011 season with a damaged nerve that caused weakness in his right arm and required multiple neck surgeries, including a single-level fusion. (AP Photo/AJ Mast, File)
