LANDOVER, MD - OCTOBER 19: Shaun Alexander #37 of the Washington Redskins runs with the ball against the Cleveland Browns on October 19...

Washington Redskins running back Clinton Portis (26) walks to the sideline after being injured as Shaun Alexander (37) looks on against the Detroit Lions in the fourth quarter of an NFL football game...

...Oct. 19, 2008 file photo, Washington Redskins head coach Jim Zorn, front, stands with running back Shaun Alexander, left, in the first quarter of a football game against the Cleveland Browns in Landover, Md...

SEATTLE - DECEMBER 09: Running back Shaun Alexander #37 of the Seattle Seahawks rushes against Terrence Holt #42 of the Arizona Cardinals on December...

Dec 16, 2007, Charlotte, NC, USA; Seattle Seahawks running back (37) Shaun Alexander leaves the field after the Carolina Panthers 13-10 victory against the Seattle Seahawks at Bank...

December 30, 2007; Atlanta, GA, USA; Seattle Seahawks running back (37) Shaun Alexander on the sideline during the game against the Atlanta Falcons in the second half at the...

Madden NFL 09

Former Madden cover athletes (L to R) Dante Culpepper, Marshall Faulk, Ray Lewis, Shaun Alexander, Vince Young talked about what it was like to be on the cover of Madden. (Photo...

Shaun Alexander and Travis Henry

GREEN BAY, WI - JANUARY 12: Running back Shaun Alexander #37 of the Seattle Seahawks runs the ball against the Green Bay Packers in the NFC...

Running back Shaun Alexander #37 of the Seattle Seahawks carries the ball against the Green Bay Packers during the NFC...

December 30, 2007; Atlanta, GA, USA; Seattle Seahawks running back (37) Shaun Alexander runs with the ball against the Atlanta Falcons in the first quarter at the Georgia Dome...

Jan. 5, 2008; Seattle, WA, USA; Seattle Seahawks running back Shaun Alexander (37) rushes the ball against the Washington Redskins during the NFC wild card game at Qwest...

Shaun Alexander #37 of the Seattle Seahawks watches against the Green Bay Packers at the NFC divisional playoff...

SEATTLE - DECEMBER 9: Shaun Alexander #37 of the Seattle Seahawks carries the ball against the Arizona Cardinals December 9, 2007 at...

GREEN BAY, WI - JANUARY 12: Running back Shaun Alexander #37 of the Seattle Seahawks runs the ball as he is hit by cornerback Charles Woodson...