Nfl

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** FILE ** Washington Redskins linebacker Bryan Kehl (53) runs with his interception during the second half of an NFL preseason football game with the Tampa Bay Buccaneers Wednesday, Aug. 29, 2012, in Landover, Md. (AP Photo/Nick Wass)

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Washington Redskins running back Roy Helu (29) runs with the ball during the first half of an NFL preseason football game with the Tampa Bay Buccaneers Wednesday, Aug. 29, 2012, in Landover, Md. (AP Photo/Richard Lipski)

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Washington Redskins wide receiver Pierre Garcon prepares to catch the ball at the team's NFL football training camp practice at Redskins Park, Monday, Aug. 13, 2012, in Ashburn, Va. (AP Photo/Alex Brandon)

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FILE - This Aug. 26, 2012 file photo shows San Francisco 49ers head coach Jim Harbaugh, right, arguing with a replacement official during the second quarter of an NFL preseason football game against the Denver Broncos, in Denver. The NFL will open the regular season with replacement officials. League executive Ray Anderson has told the 32 teams that with negotiations remaining at a standstill between the NFL and the officials' union. The replacements will be on the field beginning next Wednesday night, Sept. 5, 2012 when the Cowboys visit the Giants to open the season. (AP Photo/Joe Mahoney, File)

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St. Louis Rams offensive tackle Jason Smith (72) drills with tackle Ryan McKee (68) during NFL football training camp, Tuesday, July 31, 2012 at the team's training facility in St. Louis. (AP Photo/Tom Gannam)

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Buffalo Bills' Vince Young is pressured by Pittsburgh Steelers' Chris Carter (54) during the second half of a preseason NFL football game in Orchard Park, N.Y., Saturday, Aug. 25, 2012. (AP Photo/Doug Benz)

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Dallas Cowboys wide receiver Dez Bryant (88) sits out a workout with Miles Austin (19) during NFL football practice at Cowboys Stadium, Thursday, Aug. 23, 2012, in Arlington, Texas. (AP Photo/LM Otero)

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New England Patriots tight end Aaron Hernandez (81) during an NFL football training camp in Foxborough, Mass., Friday, Aug. 17, 2012. (AP Photo/Charles Krupa)