Billy Volek (7) of the San Diego Chargers is sacked by Matt Wilhelm (57) of the San Francisco 49ers on Thursday.

San Diego Chargers running back Mike Tolbert (35) rushes with the ball before being brought down by San Francisco 49ers linebackers Manny Lawson, left, Parys Haralson, top, and safety Dashon Goldson during the first quarter on Thursday.

Seattle Seahawks quarterback Charlie Whitehurst is tackled by Oakland Raiders linebacker Ricky Brown (57) while scrambling during the first quarter on Thursday.

Oakland Raiders running back Manase Tonga (41) scores on a 32-yard touchdown reception as Seattle Seahawks linebacker Matt McCoy (52) makes the tackle during the first quarter on Thursday.

Arizona Cardinals running back Tim Hightower (34) runs the ball as Washington Redskins linebacker H.B. Blades (54) and linebacker Chris Wilson (95) defend during the first quarter on Thursday.

Patrick Robinson (34) of the New Orleans Saints makes the hit on Lavelle Hawkins (87) of the Tennessee Titans after a 5-yard gain during the first half on Thurday.

Tennessee Titans running back Jevon Ringer (21) leaves New Orleans Saints defender Chris Reis (39) behind during the first half their preseason game on Thursday.

Brandon Gibson (11) of the St. Louis Rams looks to get over Haruki Nakamura (43) and Antwan Barnes (50) of the Baltimore Ravens during a preseason game Thursday.

Bradley Fletcher (32) of the St. Louis Rams tackles Demetrius Williams (87) of the Baltimore Ravens during a preseason game Thursday.

Denver Broncos cornerback Alphonso Smith (22) returns an interception off Minnesota Vikings quarterback Joe Webb who makes the tackle after a 51-yard gain during the third quarter on Thursday.

Albert Young (34) of the Minnesota Vikings carries the ball during a preseason game against the Denver Broncos on Thursday.

Cleveland Browns running back James Davis (28) is tackled by Chicago Bears linebacker Tim Shaw after a pass-reception during the second quarter on Thursday.

Running back Jackie Battle (26) of the Kansas City Chiefs carries the ball against the Green Bay Packers on Thursday.

Kansas City Chiefs running back Jamaal Charles (25) is tackled by Green Bay Packers defensive end Jarius Wynn during the first half on Thursday.

Tampa Bay Buccaneers running back Carlos Brown (39) is grabbed by Houston Texans linebacker Darryl Sharpton (51) during the second quarter on Thursday.

Tampa Bay Buccaneers wide receiver Arrelious Benn (17) catches a touchdown pass as Houston Texans cornerback Sherrick McManis defends during the second quarter on Thursday.

Miami Dolphins quarterback Chad Henne (7) drops back to pass against the Dallas Cowboys on Thursday.

The Chicago Bears' Devin Aromashodu (19) makes a catch and is tackled by the Cleveland Browns' Chris Chancellor (49) on Thursday.

Hunter Cantwell (14) hands the ball off to Mike Goodson (33) of the Carolina Panthers during the preseason game against the Pittsburgh Steelers on Thursday.

Jacksonville Jaguar head coach Jack Del Rio talks to Reggie Nelson during the first half on Thursday.

Jacksonville Jaguars tight end Ernest Wilford (85) is chased down by Atlanta Falcons linebacker Coy Wire (52) during the first half on Thursday.

Carolina Panthers tight end Dante Rosario (88) catches a pass behind Pittsburgh Steelers safety Troy Polamalu (43) for a first down during the first quarter on Thursday.

Philadelphia Eagles quarterback Michael Vick is shoved out of bounds by New York Jets defensive lineman Matt Kroul during the first half on Thursday.

New York Jets running back Joe McKnight breaks a tackle by the Philadelphia Eagles linebacker Keenan Clayton during the first half on Thursday.

Indianapolis Colts defensive end John Chick (97) is blocked by Cincinnati Bengals guard Isaac Sowells (79) during the second quarter on Thursday.

Detroit Lions running back Kevin Smith (34) dives past Buffalo Bills cornerback Ashton Youboty (26) Thursday during the first quarter.

Miami Dolphins quarterback Chad Henne (7) hands off to running back Ronnie Brown (23) during the first half Thursday against the Dallas Cowboys.

Buffalo Bills cornerback Drayton Florence (29) celebrates his 40-yard interception for a touchdown against the Detroit Lions with linebacker Paul Posluszny during the first quarter Thursday.

New England Patriots' Rob Gronkowski catches a pass for a touchdown during the first quarter against the New York Giants on Thursday.

The New York Giants' Kevin Boss (89) runs past the New England Patriots' Pat Chung for a touchdown during the first quarter Thursday.

Cincinnati Bengals running back Bernard Scott (28) make a move against Indianapolis Colts linebacker Ramon Humber (59) during the first quarter Thursday.