Philadelphia Eagles' running back Duce Staley (22) completes a 27-yard pass play as San Diego Chargers' saftey Rodney Harrison (37) defends in the first quarter in Philadelphia Sunday, Dec. 9, 2001. The play set up an Eagles touchdown. (AP Photo/George Widman)

Baltimore Ravens tight end Shannon Sharpe, left, gets some ribbing from San Diego Chargers strong safety Rodney Harrison as he talks with a reporter at an AFC practice for the Pro Bowl that was called because of rain, Friday, Feb. 8, 2002, in Kapolei, Hawaii. The AFC meets the NFC in the Pro Bowl on Saturday in Honolulu. (AP Photo/Reed Saxon)

New England Patriots safety Rodney Harrison laughs as he and Troy Brown (80) stretch during team practice in Foxboro, Mass., Wednesday, Jan. 14, 2004. The Patriots are preparing for Sunday's AFC Championship game against the Indianapolis Colts. (AP Photo/Elise Amendola)

New England Patriots' Rodney Harrison answers questions during a news conference in Houston, Sunday, Jan. 25, 2004. New England will face the Carolina Panthers in Super Bowl XXXVIII, Sunday Feb. 1. (AP Photo/Eric Gay)

FILE - This Oct. 10, 2004 file photo shows New England Patriots safety Rodney Harrison (37) celebrating a third quarter sack of Miami Dolphins quarterback Jay Fiedler in New England's 24-10 win at Gillette Stadium in Foxboro, Mass.. At rear is defensive back Eugene Wilson. Harrison announced his retirement on Wednesday, saying he is through hitting quarterbacks after a 15-year career for the New England Patriots and San Diego Chargers.(AP Photo/Winslow Townson, File)

San Francisco 49ers tight end Eric Johnson (82) cannot make the catch as New England Patriots Rodney Harrison, right, defends during the second quarter of their NFL game at Gillette Stadium in Foxboro, Mass., Sunday, Jan. 2, 2005. (AP Photo/Elise Amendola)

New England Patriots' Rodney Harrison returns an interception 87 yards for a touchdown in the second quarter of the AFC Championship game against the Pittsburgh Steelers Sunday, Jan. 23, 2005, in Pittsburgh. (AP Photo/Stephan Savoia)

New England Patriots defense Rodney Harrison (37) and Eugene Wilson (26) break up a pass intended for Oakland Raiders Randy Moss (18) in the end zone during the fourth quarter in Foxborough, Mass. Thursday, Sept. 8, 2005. (AP Photo/Charles Krupa)

New England Patriots strong saftey Rodney Harrison smiles as he talks with reporters while standing near his locker at the football team's facility in Foxborough, Mass., Tuesday morning Jan. 3, 2006. Harrison was put on injured reserve for the remainder of the year after being injured against the Pittsburg Steelers in the third week of the 2005 season. The Patriots (11-5) will play the Jacksonville Jaguars (12-4) in Saturday's AFC wildcard playoff football game. (AP Photo/Stephan Savoia)

New England Patriots defensive lineman Richard Seymour (93) talks with safety Rodney Harrison (37) before the football team's practice begins in Foxborough, Mass., Wednesday afternoon Sept 6, 2006. The Patriots begin their 2006 NFL season Sunday against the Buffalo Bills in Foxborough. (AP Photo/Stephan Savoia)

New England Patriots safety Rodney Harrison (37) throws a pass before the start of the first session of the NFL football team's first day of training camp in Foxborough, Mass., Friday morning, July 27, 2007. (AP Photo/Stephan Savoia)

New England Patriots safety Rodney Harrison (37) prepares to put on his helmet and gloves as practice gets under way at the NFL football team's facility in Foxborough, Mass., Wednesday morning, Oct. 31, 2007. The 8-0 Patriots will play the 7-0 Indianapolis Colts in Indianapolis Sunday. (AP Photo/Stephan Savoia)

New England Patriots safety Rodney Harrison reacts after a play against the Jacksonville Jaguars in the second half of a NFL divisional playoff football game Saturday, Jan. 12, 2008, in Foxborough, Mass. (AP Photo/Charles Krupa)

FILE This is a Jan. 17, 2008 file photo showing New England Patriots safety Rodney Harrison listening to a reporter's question during a media availability at the NFL football team's facility in Foxborough, Mass. Harrison is expected to announce this week whether he is retiring from the NFL. (AP Photo/Stephan Savoia, File)

Safety Rodney Harrison #37 of the New England Patriots runs toward the action on a play against the New York Giants during Super Bowl XLII at the University of Phoenix Stadium on February 3, 2008 in Glendale, Arizona. The Giants defeated the Patriots 17-14. (AP Photo/Paul Spinelli)

New England Patriots safety Rodney Harrison wipes his head during the Patriots 30-10 defeat against the San Diego Chargers in an NFL football game, Sunday, Oct. 12, 2008 in San Diego. (AP Photo/Lenny Ignelzi)

San Diego Chargers safety Rodney Harrison gets set on defense against the Buffalo Bills during an NFL football game on September 6, 1998 in San Diego. The Chargers won 16-14. (AP Photo/G. Newman Lowrance)

San Diego Chargers safety Rodney Harrison runs to the sidelines against the Buffalo Bills during an NFL football game on September 6, 1998 in San Diego. The Chargers won 16-14. (AP Photo/G. Newman Lowrance)

New England Patriots Rodney Harrison leaps in the air on an attempted interception during the NFL Super Bowl XXXIX football game against the Philadelphia Eagles in Jacksonville, Florida on February 6, 2005. The Patriots won 24-21. (AP Photo/G. Newman Lowrance)