Washington Redskins quarterback Robert Griffin III (10) in action against the Carolina Panthers November 4, 2012 at FedEX field in Landover, Maryland Carolina defeated Washington 21-13. (AP Photo/Damian Strohmeyer)

Washington Redskins quarterback Robert Griffin III (10) celebrates with fans after a 76-yard touchdown run during the second half of an NFL football game against the Minnesota Vikings, Sunday, Oct. 14, 2012, in Landover, Md. (AP Photo/Pablo Martinez Monsivais)

Washington Redskins quarterback Robert Griffin III (10) runs during an NFL football game against the Tampa Bay Buccaneers at Raymond James Stadium on Sunday, Sept. 30, 2012 in Tampa, Fla. The Redskins won 24-22. (AP Photo/Perry Knotts)

Washington Redskins quarterback Robert Griffin III (10) walks off the field after the Redskins were defeated 27-23 by the New York Giants during the second half of an NFL football game Sunday, Oct. 21, 2012 in East Rutherford, N.J. The Giants won the game 27-23. (AP Photo/Julio Cortez)

Washington Redskins quarterback Robert Griffin III (10) looks to pass during an NFL football game against the Pittsburgh Steelers in Pittsburgh, Sunday, Oct. 28, 2012. The Steelers won 27-12. (AP Photo/Gene J. Puskar)

Washington Redskins quarterback Robert Griffin III, right, greets his mother Jacqueline Griffin before an NFL football game against the Carolina Panthers Sunday, Nov. 4, 2012, in Landover, Md. (AP Photo/Richard Lipski)

Washington Redskins offensive coordinator Kyle Shanahan, left, signals touchdown, as Washington Redskins quarterback Robert Griffin III (10) run for a 76-yard touchdown during the second half of an NFL football game against the Minnesota Vikings Sunday, Oct. 14, 2012, in Landover, Md. (AP Photo/Richard Lipski)

Washington Redskins rookie quarterback Robert Griffin III (10) celebrates after throwing a touchdown pass during an NFL football game against the New Orleans Saints at the Mercedes-Benz Superdome on Sunday September 9, 2012 in New Orleans, Louisiana. Washington won 40-32. (AP Photo/Aaron M. Sprecher)

Washington Redskins quarterback Robert Griffin III pauses before signing autographs after practice at the team's NFL football training camp at Redskins Park, Tuesday, Aug. 14, 2012, in Ashburn, Va. (AP Photo/Alex Brandon)

Washington Redskins quarterback Robert Griffin III greets fans as he walks to the field during NFL football training camp at Redskins Park, Monday, Aug. 6, 2012, in Ashburn, Va. (AP Photo/Alex Brandon)

Washington Redskins first round NFL football draft pick, Robert Griffin III, pumps his fist as he walks to the field after a press conference, Saturday, April 28, 2012, in Landover, Md. (AP Photo/Nick Wass)

Robert Griffin III walks on stage prior to the 2012 NFL Draft at Radio CIty Music Hall on Thursday, April 26, 2012 in New York, NY. (Ben Liebenberg/NFL)

Robert Griffin III and Andrew Luck arrive at the 2012 NFL Draft at Radio CIty Music Hall on Thursday, April 26, 2012 in New York, NY. (Ben Liebenberg/NFL)

Newest SUBWAY Famous Fan Robert Griffin III, top prospect in the 2012 NFL Draft, shows off his customized SUBWAY socks as he poses with his life-size statue made of SUBWAY Smokehouse BBQ Chicken, Tuesday, April 24, 2012, in New York. The sculpture, made by artist James Victor of Conshohocken, Penn., is an artistic representation of the football star from the chest up and stands approximately three feet tall. (Diane Bondareff/AP Images for SUBWAY)

Baylor quarterback Robert Griffin III runs the 40 yard dash during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 26 in Indianapolis, Ind. (Gary A. Vasquez/NFL)

Robert Griffin III poses for a portrait during the NFL Scouting Combine on Saturday, Feb. 25, 2012, in Indianapolis. (Ben Liebenberg/NFL)

Baylor quarterback Robert Griffin III (10) finds running room behind the line of scrimmage against Texas in the first half of an NCAA college football game in Waco, Texas. Griffin III has won The Associated Press college football player of the year, adding another award to his impressive postseason haul. (AP Photo/Tony Gutierrez, File)