Denver Broncos quarterback Peyton Manning (18) warms up before an NFL preseason football game against the Chicago Bears in Chicago, Thursday, Aug. 9, 2012. (AP Photo/Nam Y. Huh)

Associated Press
Denver Broncos quarterback Peyton Manning (18) warms up before an NFL preseason football game against the Chicago Bears in Chicago, Thursday, Aug. 9, 2012. (AP Photo/Nam Y. Huh)
Denver Broncos quarterback Peyton Manning (18) warms up before an NFL preseason football game against the Chicago Bears in Chicago, Thursday, Aug. 9, 2012. (AP Photo/Nam Y. Huh)
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