Offensive line coach Bill Callahan of the Cleveland Browns reacts during the second half of the game against the Washington Commanders at FedExField...
Head coach Bill Callahan of the Nebraska Cornhuskers challenges a play in the fourth quarter against the Colorado Buffaloes on November 24, 2006 at...
Quarterback Zac Taylor of the Nebraska Cornhuskers listens to head coach Bill Callahan before the game against the Colorado Buffaloes on November 24,...
Offensive line coach Bill Callahan of the Cleveland Browns looks on after the game against the Washington Commanders at FedExField on January 1, 2023...
Head coach Bill Callahan of the Washington Redskins looks on before the game against the Detroit Lions at FedExField on November 24, 2019 in...
Assistant Head Coach/Offensive Line Coach Bill Callahan of the New York Jets watches the action on the sidelines as the Cleveland Browns hosted the...
Head coach Bill Callahan of the Nebraska Cornhuskers watches the action during a game against the Kansas Jayhawks at Memorial Stadium in Lawrence,...
Head Coach Bill Callahan of the Nebraska Cornhuskers jogs on the field with his team as they host the Texas Longhorns on October 21, 2006 at Memorial...
Geron Christian of the Cleveland Browns talks with offensive line coach Bill Callahan during the first half against the New York Jets at Cleveland...
Oakland Raiders' head coach Bill Callahan gestures to his players during training camp on Friday, July 25, 2003 in Napa, Calif.
Oakland Raiders head coach Bill Callahan makes a statement during a press conference in Alameda, Calif., on Monday, Dec. 29, 2003. Callahan called...
Assistant Head Coach/Offensive Line Coach Bill Callahan of the New York Jets checks out the action against the Oakland Raiders host the New York Jets...
College Football: Nebraska head coach Bill Callahan on sidelines during game vs USC, Lincoln, NE 9/15/2007
Nebraska Cornhusker Joe Dailey with Head Coach Bill Callahan on September 18 at Heinz Field in Pittsburgh, Pennsylvania.
Nebraska Cornhuskers Joe Dailey and Head Coach Bill Callahan on September 18 at Heinz Field in Pittsburgh, Pennsylvania.
Nebraska head coach Bill Callahan set up a play with quarterback Zac Taylor in the second half at Bill Snyder Family Stadium in Manhattan, Kansas,...
Head coach Bill Callahan leads the Nebraska Cornhuskers against the Colorado Buffaloes during Big 12 College Football action at Folsom Field on...
Wake Forest Demon Deacons head coach Jim Grobe chats with Nebraska Cornhuskers head coach Bill Callahan at BB&T Stadium September 8, 2007 in Winston...
Nebraska head coach Bill Callahan during the Nebraska Cornhuskers 30 - 3 victory over the Colorado Buffaloes at Folsom Field in Boulder CO.
Head Coach Bill Callahan of the Oakland Raiders on the field during a game against the Cincinnati Bengals on September 14, 2003 at the Network...
Head coach Bill Callahan of the Oakland Raiders talks with officials during a time out to review the fourth down play at the end of the game that...
Head coach Bill Callahan of the Oakland Raiders looks up at the scoreboard against the Denver Broncos on September 22, 2003 at Invesco Field at Mile...
Head Coach Bill Callahan of the Oakland Raiders fields questions from the press during Media Day on January 21, 2003 at Qualcomm Stadium in San...
Oakland Raiders head coach Bill Callahan concentrates on play during the AFC Division Playoff game against the New York Jets at Network Associates...
Offensive line coach Bill Callahan of the Cleveland Browns looks on during the second half against the Tennessee Titans at Cleveland Browns Stadium...
Offensive line coach Bill Callahan of the Cleveland Browns directs a drill during the Cleveland Browns mandatory veteran minicamp at CrossCountry...
Head coach Bill Callahan of the Oakland Raiders looks on from the sidelines against the Tampa Bay Buccaneers in Super Bowl XXXVII at Qualcomm Stadium...
Offensive line coach Bill Callahan of the Cleveland Browns looks on prior to a game against the New York Jets at FirstEnergy Stadium on September 18,...
Offensive line coach Bill Callahan and offensive coordinator Alex Van Pelt watch from the sidelines during the second half against the Las Vegas...
Oakland Raiders head coach Bill Callahan celebrates with the AFC Championship trophy with Jerry Rice, #80, after their win against the Tennessee...
Cleveland Browns Offensive Line Coach Bill Callahan looks on during the Cleveland Browns game versus the Washington Commanders on January 01 at FedEx...
Head coach Bill Callahan of the Washington Redskins looks on during warm ups prior to the game against the Green Bay Packers at Lambeau Field on...
Interim head coach Bill Callahan of the Washington Redskins looks on during the second half of the game against the New York Giants at FedExField on...
Interim head coach Bill Callahan of the Washington Redskins looks on against the Miami Dolphins during the fourth quarter at Hard Rock Stadium on...
Oakland Raiders' head coach Bill Callahan looks over the field as the team arrives for a walkthrough at Qualcomm Stadium 25 January 2003 in...
Washington Redskins interim head coach Bill Callahan on the sideline in the fourth quarter of the game against the Minnesota Vikings at U.S. Bank...
Oakland Raiders head coach Bill Callahan makes a statement during a press conference in Alameda, Calif., on Monday, Dec. 29, 2003. Callahan called...
Oakland Raiders head coach Bill Callahan walks out of a press conference before taking questions in Alameda, Calif., on Monday, Dec. 29, 2003....
Coach John Tortorella of the New York Rangers looks at players Ryan Callahan and Chris Drury during their loss to the Buffalo Sabres on April 6, 2010...
Oakland Raiders coach Bill Callahan on sidelines during game vs. Buffalo Bills at Ralph Wilson Stadium. Orchard Park, NY 10/6/2002 CREDIT: David...
Washington Redskins Offensive Line coach Bill Callahan talks into his headset during a NFL football game between the San Francisco 49ers and the...
Washington Redskins Offensive Line coach Bill Callahan talks during a NFL football game between the San Francisco 49ers and the Washington Redskins...
Assistant Head Coach/Offensive Line Coach Bill Callahan of the Washington Redskins in action against the New York Giants at MetLife Stadium on...
Assistant Head Coach/Offensive Line Coach Bill Callahan of the Washington Redskins in action against the New York Giants at MetLife Stadium on...
Washington offensive line coach Bill Callahan, center, instructs TE Logan Paulsen, left, and Trent Williams during the 2nd day of the Washington...
Washington Redskins offensive line coach Bill Callahan looks up at the video board during the game between the Dallas Cowboys and the Washington...
Washington offensive line coach Bill Callahan, center, talks with guard Brandon Scherff , left, guard Shawn Lauvao and guard Isaiah Williams , right,...
Redskins offensive line coach Bill Callahan, center, converses with his linemen during day two of Redskins mini-camp in Ashburn VA, June 17, 2015
Redskins offensive line coach Bill Callahan, center, converses with his linemen during day two of Redskins mini-camp in Ashburn VA, June 17, 2015
Assistant Head Coach/Offensive Line Bill Callahan of the New York Jets watches the action in the snow against the Seattle Sehawks on December 21,...
Assistant Head Coach/Offensive Line Bill Callahan of the New York Jets watches the action against the San Francisco 49ers on December 7, 2008 at...
Assistant Head Coach/Offensive Line Bill Callahan of the New York Jets discusses a play against the New England Patriots on November 13, 2008 at...
Bill Callahan, instructor, checks small one-handed weights as part of his job at Englewood Recreation Department Optimist Club's program of weight...
Assistant Head Coach/Offensive Line Bill Callahan of the New York Jets follows the play when the Jets host the New England Patriots on September 14,...
Assistant Head Coach/Offensive Line Bill Callahan of the New York Jets follows the play when the Jets host the New England Patriots on September 14,...
Washington offensive line coach Bill Callahan, left, converses with Washington tackle Trent Williams during an afternoon practice at the Washington...
College Football: Nebraska head coach Bill Callahan on sidelines with Wali Muhammad and Fabian Washington during game vs Southern Mississippi,...
Football: AFC playoffs, Oakland Raiders coach Bill Callahan during game vs Tennessee Titans, Oakland, CA 1/19/2003