Denver Broncos quarterback Brock Osweiler warms up in seven degree Fahrenheit temperatures before playing the Baltimore Ravens in an AFC divisional playoff NFL football game, Saturday, Jan. 12, 2013, in Denver. (AP Photo/Jack Dempsey)

Associated Press
Denver Broncos quarterback Brock Osweiler warms up in seven degree Fahrenheit temperatures before playing the Baltimore Ravens in an AFC divisional playoff NFL football game, Saturday, Jan. 12, 2013, in Denver.  (AP Photo/Jack Dempsey)
Denver Broncos quarterback Brock Osweiler warms up in seven degree Fahrenheit temperatures before playing the Baltimore Ravens in an AFC divisional playoff NFL football game, Saturday, Jan. 12, 2013, in Denver. (AP Photo/Jack Dempsey)
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