Baltimore Ravens head coach John Harbaugh watches the action of the field during the first half of an NFL football game against the Denver Broncos in Baltimore, Sunday, Dec. 16, 2012. (AP Photo/Patrick Semansky)

Photo by: Patrick Semansky

Baltimore Ravens head coach John Harbaugh watches the action of the field during the first half of an NFL football game against the Denver Broncos in Baltimore, Sunday, Dec. 16, 2012. (AP Photo/Patrick Semansky)