Denver Broncos coach John Fox undergoes heart surgery

Denver Broncos head coach John Fox watches during the first half of an NFL football game against the Indianapolis Colts, Sunday, Oct. 20, 2013, in Indianapolis. (AP Photo/Michael Conroy)
Denver Broncos head coach John Fox watches during the first half of an NFL football game against the Indianapolis Colts, Sunday, Oct. 20, 2013, in Indianapolis. (AP Photo/Michael Conroy)
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