Washington Redskins quarterback Robert Griffin III, left, scrambles past Philadelphia Eagles nose tackle Bennie Logan during the first half of an NFL football game in Philadelphia, Sunday, Nov. 17, 2013. (AP Photo/Matt Slocum)

Washington Redskins quarterback Robert Griffin III points skyward before running onto the field before an NFL football game against the Kansas City Chiefs in Landover, Md., Sunday, Dec. 8, 2013. (AP Photo/Evan Vucci)

Washington Redskins quarterback Robert Griffin III passes the ball during the first half of an NFL football game against the Kansas City Chiefs in Landover, Md., Sunday, Dec. 8, 2013. (AP Photo/Pablo Martinez Monsivais)

Washington Redskins quarterback Robert Griffin III dives for a first down during the first half of an NFL preseason football game against the Indianapolis Colts on Saturday, Aug. 25, 2012, in Landover, Md. (AP Photo/Richard Lipski)

Washington Redskins quarterback Robert Griffin III (10) celebrates during an NFL football game against the Philadelphia Eagles at FedEx Field on Monday, September 9, 2013 in Landover, Maryland. Philadelphia won 33-27. (Aaron M. Sprecher/NFL)

Washington Redskins quarterback Robert Griffin III (10) greets fans prior to an NFL football game against the Philadelphia Eagles at FedEx Field on Monday, September 9, 2013 in Landover, Maryland. Philadelphia won 33-27. (Aaron M. Sprecher/NFL)

Washington Redskins quarterback Robert Griffin III celebrates as he leaves the field after an NFL football game against the New York Giants in Landover, Md., Monday, Dec. 3, 2012. The Redskins won 17-16. (AP Photo/Nick Wass)

Washington Redskins quarterback Robert Griffin III (10) looks to throw the ball downfield against the New York Giants at FedEx Field on December 3, 2012 in Landover, Maryland. Washington won 17-16. (Aaron M. Sprecher/NFL)

Washington Redskins quarterbacks Robert Griffin III and Kirk Cousins walk through the tunnel to the field before an NFL football game against the Baltimore Ravens in Landover, Md., Sunday, Dec. 9, 2012. (AP Photo/Patrick Semansky)

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) passes during the third quarter of an NFL football game against the St. Louis Rams Sunday, Sept. 16, 2012, in St. Louis. (AP Photo/Seth Perlman)

Washington Redskins quarterback Robert Griffin III carries a US Flag onto the field before an NFL football game against the Philadelphia Eagles in Landover, Md., Sunday, Nov. 18, 2012. in support of the NFL's Salute to Service. (AP Photo/Nick Wass)

Washington Redskins quarterback Robert Griffin III throws a touchdown pass during the first half of an NFL football game against the Philadelphia Eagles in Landover, Md., Sunday, Nov. 18, 2012. (AP Photo/Patrick Semansky)

Washington Redskins quarterback Robert Griffin III (10) scrambles out of the pocket during an NFL football game against the Dallas Cowboys Thursday, Nov. 22, 2012, in Arlington, Texas. The Redskins won 38-31. (AP Photo/Matt Strasen)

Washington Redskins quarterback Robert Griffin III (10) holds up his Galloping Gobbler 2012 award following their 38-31 win over the Dallas Cowboys in an NFL football game Thursday, Nov. 22, 2012 in Arlington, Texas. (AP Photo/Tim Sharp)

Washington Redskins rookie quarterback Robert Griffin III (10) scrambles for a gain during an NFL football game against the Carolina Panthers at FedEx Field on Sunday November 4, 2012 in Landover, Maryland. Carolina won 21-13. (Aaron M. Sprecher/NFL)

Washington Redskins quarterback Robert Griffin III is picked up by tight end Logan Paulsen after Griffin threw a touchdown pass to wide receiver Aldrick Robinson during the first half of an NFL football game against the Philadelphia Eagles in Landover, Md., Sunday, Nov. 18, 2012. (AP Photo/Patrick Semansky)

Washington Redskins quarterback Robert Griffin III (10) gets away from Minnesota Vikings safety Harrison Smith (22) to score a touchdown during the first half of an NFL football game, Sunday, Oct. 14, 2012, in Landover, Md. (AP Photo/Richard Lipski)

Washington Redskins quarterback Robert Griffin III (10) rushes as teammate Darrel Young (36) blocks Jason Pierre-Paul (90) during the first half of an NFL football game Sunday, Oct. 21, 2012 in East Rutherford, N.J. (AP Photo/Julio Cortez)

Washington Redskins rookie quarterback Robert Griffin III (10) looks to throw the ball downfield during an NFL football game against the Carolina Panthers at FedEx Field on Sunday November 4, 2012 in Landover, Maryland. Carolina won 21-13. (Aaron M. Sprecher/NFL)

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. (Aaron M. Sprecher/NFL)

Baylor quarterback Robert Griffin III, left, is joined by his father Robert Griffin Jr. as he displays his sock and new jersey while speaking to reporters after he was selected as the second pick overall by the Washington Redskins in the first round of the NFL football draft at Radio City Music Hall, Thursday, April 26, 2012, in New York. (AP Photo/Mary Altaffer)

Robert Griffin III poses for a photo with NFL Commissioner Roger Goodell after being selected second overall by the Washington Redskins during the 2012 NFL Draft at Radio CIty Music Hall on Thursday, April 26, 2012 in New York, NY. (Alix Drawec/NFL)

Robert Griffin III walks on stage after being selected second overall by the Washington Redskins during the 2012 NFL Draft at Radio CIty Music Hall on Thursday, April 26, 2012 in New York, NY. (Alix Drawec/NFL)

Robert Griffin III speaks on the phone backstage during 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)

Baylor quarterback Robert Griffin III participates in the NFL Play 60 event on Wednesday, April 25, 2012 in New York, NY. (Alix Drawec/NFL)

NFL Network's Michael Irvin, center, speaks with draft prospects Andrew Luck and Robert Griffin III at Radio City Music Hall on Wednesday, April 25, 2012 in New York, NY. (Alix Drawec/NFL)

Baylor Bears quarterback Robert Griffin III speaks on the NFL.com Live set at the Super Bowl XLVI media center in Indianapolis, IN on Feb. 3, 2012. (Alix Drawec/NFL)

University of Baylor quarterback Robert Griffin III looks on with former NFL player Kurt Warner during the NFL Scouting Combine on Sunday, Feb. 26, 2012, in Indianapolis. (AP Photo/Ben Liebenberg)

Baylor quarterback Robert Griffin III runs the 40-yard dash during the 2012 NFL Scouting Combine at Lucas Oil Stadium on Feb. 26, 2012 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)

Robert Griffin III, of Baylor University, holds the Heisman Trophy award after being named the winner, Saturday, Dec. 10, 2011, in New York. (AP Photo/Kelly Kline, pool)

Baylor quarterback Robert Griffin (10) during an NCAA college football game against Texas A&M in Waco, Texas, Saturday, Nov. 15, 2008. (AP Photo/Tony Gutierrez)

Baylor quarterback Robert Griffin III (10) throws against Rice in the first half of an NCAA college football game on Saturday, Sept. 24, 2011, in Waco, Texas. (AP Photo/ Rod Aydelotte)

Baylor University quarterback Robert Griffin (10) rushes past Washington State defenders Romeo Pellum, left, and teammate Jason Stripling, right, during the second quarter of a college football game Friday Sept. 12, 2008, in Waco, Texas. (AP Photo/Waco Tribune Herald, Jerry Larson)

Nick Perry, left, Ryan Tennehill, Robert Griffin III, center, Andrew Luck, second from right, and Matt Kalil laugh during the NFL Play 60 Youth Football Festival, Wednesday, April 25, 2012, in New York. (AP Photo/Mary Altaffer)

Washington Redskins quarterback Robert Griffin III waves as he attends an NBA basketball game between the Washington Wizards and the Miami Heat, Tuesday, Dec. 4, 2012, in Washington. (AP Photo/Nick Wass)

Washington Redskins quarterback Robert Griffin III scrambles with the ball during the second half of an NFL football game against the Kansas City Chiefs in Landover, Md., Sunday, Dec. 8, 2013. (AP Photo/Evan Vucci)

Washington Redskins quarterback Robert Griffin III warms up before an NFL football game against the Kansas City Chiefs in Landover, Md. Sunday, Dec. 8, 2013. (AP Photo/Evan Vucci)

Washington Redskins quarterback Robert Griffin III pauses while speaking during a media availability after an NFL football game against the New York Giants Sunday, Dec. 1, 2013, in Landover, Md. The Giants won 24-17. (AP Photo/Patrick Semansky)