Nfl

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Baltimore Ravens head coach John Harbaugh speaks during an end-of-season news conference Tuesday, Dec. 31, 2013, in Owings Mills, Md. The Ravens, who won last season's Super Bowl, did not make the NFL playoffs this season for the first time since Harbaugh became the head coach in 2008. (AP Photo/Steve Ruark)

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Chicago Bears head coach Lovie Smith is seen before the first quarter of an NFL football game against the Detroit Lions at Ford Field in Detroit, Sunday, Dec. 30, 2012. (AP Photo/Duane Burleson)

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Chicago Bears head coach Lovie Smith looks on before an NFL football game against the Minnesota Vikings Sunday, Dec. 9, 2012, in Minneapolis. (AP Photo/Charlie Neibergall)

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Heisman Trophy winner Robert Griffin III, left, laughs as he and head coach Art Briles respond to questions during a news conference where Griffin announced he would skip his senior year and enter the NFL draft, Wednesday, Jan. 11, 2012, in Waco, Texas. (AP Photo/Tony Gutierrez)

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Cincinnati Bengals defensive coordinator Mike Zimmer watches in the second half of an NFL football game against the Dallas Cowboys, Sunday, Dec. 9, 2012, in Cincinnati. (AP Photo/Michael Keating)

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Cincinnati Bengals defensive coordinator Mike Zimmer watches from the sidelines in the second half of an NFL football game against the Pittsburgh Steelers, Tuesday, Sept. 17, 2013, in Cincinnati. (AP Photo/David Kohl)

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Arizona Cardinals coach Russ Grimm, left, talks with Andre Roberts (12) during the first half of an NFL football game against the Philadelphia Eagles Sunday, Sept. 23, 2012, in Glendale, Ariz. The Cardinals defeated the Eagles 27-6.(AP Photo/Paul Connors)

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Minnesota Vikings' Brett Favre (4) talks with Vikings offensive coordinator Darrell Bevell in the second quarter during an NFL football game against the Arizona Cardinals Sunday, Dec. 6, 2009, in Glendale, Ariz. The Cardinals defeated the Vikings 30-17. (AP Photo/Ross D. Franklin)

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Cincinnati Bengals quarterback Andy Dalton (14) talks with offensive coordinator Jay Gruden in the first half of an NFL football game against the Cleveland Browns, Sunday, Nov. 17, 2013, in Cincinnati. (AP Photo/David Kohl)

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Cincinnati Bengals offensive coordinator Jay Gruden walks on the field prior to an NFL football game against the Baltimore Ravens, Sunday, Jan. 1, 2012, in Cincinnati. (AP Photo/Al Behrman)

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San Diego Chargers offensive coordinator Ken Whisenhunt watches warmups prior to an NFL football game against the Jacksonville Jaguars in Jacksonville, Fla., Sunday, Oct. 20, 2013. (AP Photo/Phelan M. Ebenhack)

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Arizona Cardinals head coach Ken Whisenhunt holds the George Halas Trophy after the NFL NFC championship football game against the Philadelphia Eagles Sunday, Jan. 18, 2009, in Glendale, Ariz. The Cardinals won 32-25. (AP Photo/Matt York)

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Arizona Cardinals' Ken Whisenhunt talks during a news conference at the hotel where the team is staying Monday, Jan. 26, 2009, in Tampa, Fla. The Cardinals will face the Pittsburgh Steelers in the NFL football Super Bowl XLIII in Tampa on Sunday. (AP Photo/Ross D. Franklin)