Denver Broncos quarterback Peyton Manning takes the field before an NFL preseason football game against the Chicago Bears in Chicago, Thursday, Aug. 9, 2012. (AP Photo/Michael Conroy)

Chicago Bears quarterback Jay Cutler warms up before an NFL preseason football game against the Denver Broncos in Chicago, Thursday, Aug. 9, 2012. (AP Photo/Nam Y. Huh)

Denver Broncos quarterback Peyton Manning passes before an NFL preseason football game against the Chicago Bears in Chicago, Thursday, Aug. 9, 2012. (AP Photo/Charles Rex Arbogast)

Denver Broncos quarterback Peyton Manning (18) passes against the Chicago Bears during the first half of an NFL preseason football game in Chicago, Thursday, Aug. 9, 2012. (AP Photo/Michael Conroy)

Denver Broncos quarterback Peyton Manning (18) calls a play from the line of scrimmage behind guards Manny Ramirez (65) and Zane Beadles (68) against the Chicago Bears during an NFL preseason football game in Chicago, Thursday, Aug. 9, 2012. (AP Photo/Nam Y. Huh)

Denver Broncos wide receiver Eric Decker (87) is tackled by Chicago Bears linebacker Nick Roach (53) during an NFL preseason football game in Chicago, Thursday, Aug. 9, 2012. (AP Photo/Nam Y. Huh)

Denver Broncos head coach John Fox watches from the sideline during the first half of an NFL preseason football game against the Chicago Bears in Chicago, Thursday, Aug. 9, 2012. (AP Photo/Michael Conroy)

Denver Broncos running back Willis McGahee (23) rushes past Chicago Bears defensive tackle Stephen Paea (92) during an NFL preseason football game in Chicago, Thursday, Aug. 9, 2012. (AP Photo/Michael Conroy)

Denver Broncos running back Lance Ball (35) rushes against Chicago Bears linebacker Lance Briggs (55) during the first half of an NFL preseason football game in Chicago, Thursday, Aug. 9, 2012. (AP Photo/Michael Conroy)

Denver Broncos quarterback Peyton Manning (18) calls a play from the line of scrimmage behind center J.D. Walton against the Chicago Bears during the first half of an NFL preseason football game in Chicago, Thursday, Aug. 9, 2012. (AP Photo/Nam Y. Huh)

Denver Broncos linebacker Von Miller (58) intercepts a pass in front Chicago Bears wide receiver Brandon Marshall (15) during the first half of an NFL preseason football game in Chicago, Thursday, Aug. 9, 2012. (AP Photo/Nam Y. Huh)

Chicago Bears quarterback Jason Campbell (2) looks for a receiver against the Denver Broncos during the first half of an NFL preseason football game in Chicago, Thursday, Aug. 9, 2012. (AP Photo/Nam Y. Huh)

Denver Broncos kicker Matt Prater (5) sends a field goal as Chicago Bears defensive back Kelvin Hayden (24) watches during the first half of an NFL preseason football game in Chicago, Thursday, Aug. 9, 2012. (AP Photo/Nam Y. Huh)

Chicago Bears safety Major Wright (21) celebrates after intercepting a throw during the first half of an NFL preseason football game against the Denver Broncos in Chicago, Thursday, Aug. 9, 2012. (AP Photo/Nam Y. Huh)

Chicago Bears quarterback Jay Cutler (6), kicker Robbie Gould (9) and tackle A.J. Greene (75) watch from the sidelines against the Denver Broncos during the first half of an NFL preseason football game in Chicago, Thursday, Aug. 9, 2012. (AP Photo/Charles Rex Arbogast)