Montee Ball spikes the ball after scoring his first of two touchdowns against the Kansas City Chiefs. (Ric Tapia/NFL)

Tampa Bay Buccaneers defensive end Daniel Te'o-Nesheim carries the American flag onto the field before a game against the Atlanta Falcons. (AP Photo/Chris O'Meara)

The Houston Texans' Brandon Harris is called for pass interference as the Oakland Raiders' Rod Streater attempts to catch a pass. (AP Photo/Tony Gutierrez)

Pittsburgh Steelers running back Le'Veon Bell leaps for more yardage as he tries to evade the Detroit Lions defense. (AP Photo/Gene J. Puskar)

The New Orleans Saints' Jabari Greer is introduced before a game against the San Francisco 49ers at the Mercedes-Benz Superdome. (Aaron M. Sprecher/NFL)

Robbie Gould celebrates his game-winning field goal attempt as the Chicago Bears defeated the Baltimore Ravens in overtime. (Todd Rosenberg/NFL)

The Seattle Seahawks' Byron Maxwell leaps on the back of Walter Thurmond after Thurmond ran an interception back for a score against the Minnesota Vikings. (AP Photo/Ted S. Warren)

Philadelphia Eagles running back LeSean McCoy celebrates his touchdown against the Washington Redskins. (AP Photo/Michael Perez)

Pittsburgh Steelers cornerback Ike Taylor (24) defends Detroit Lions wide receiver Calvin Johnson. Taylor was called for pass interference on the play. (AP Photo/Don Wright)

Baltimore Ravens players leave the field as play was suspended for a severe thunderstorm blowing through Soldier Field in Chicago. (AP Photo/Charles Rex Arbogast)