Robert Griffin Iii

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Redskins quarterback Robert Griffin III takes off his helmet prior to stretching exercises during the Redskins training camp at Redskins Park in Ashburn, Va., Monday, August 13, 2012. (Rod Lamkey Jr./The Washington Times)

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Redskins quarterback Robert Griffin III talks with kicker Graham Gano (4) during stretching exercises during the Redskins training camp at Redskins Park in Ashburn, Va., Monday, August 13, 2012. (Rod Lamkey Jr./The Washington Times)

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Fans line up and cram into each other, reaching and screaming out with their souvenirs to be signed by Redskins quarterback Robert Griffin III (right) following the Redskins training camp at Redskins Park in Ashburn, Va., Monday, August 13, 2012. (Rod Lamkey Jr./The Washington Times)

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Fans line up and cram into each other, reaching and screaming out with their souvenirs to be signed by Redskins quarterback Robert Griffin III (right) following the Redskins training camp at Redskins Park in Ashburn, Va., Monday, August 13, 2012. (Rod Lamkey Jr./The Washington Times)

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The Baylor Bears are looking for quarterback Nick Florence to be more than a second-half fill-in for Heisman Trophy winner Robert Griffin III this season. (AP Photo/L.G. Patterson, File)

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Fans line up with souvenirs to get autographs from Redskins quarterback Robert Griffin III (right) on Aug. 13, 2012, following the team's training camp at Redskins Park in Ashburn, Va. (Rod Lamkey Jr./The Washington Times)

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Robert Griffin III went 4-for-6 for 70 yards and a touchdown in his Washington Redskins preseason debut. (Associated Press)

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Washington Redskins quarterback Robert Griffin III (center) goes over plays with other quarterbacks during the second half of the Redskins' 7-6 preseason win over the Buffalo Bills in Orchard Park, N.Y., on Thursday, Aug. 9, 2012. (Associated Press)

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Washington Redskins' Robert Griffin III hands off during the first half of a preseason NFL football game against the Buffalo Bills in Orchard Park, N.Y., Thursday, Aug. 9, 2012. (AP Photo/Bill Wippert)

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Redskins quarterback Robert Griffin III brings elite speed, a strong arm and a sharp mind to an offensive scheme replete with misdirection in the backfield. But the rookie also has gone through growing pains in training camp. (Andrew Harnik/The Washington Times)

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Redskins quarterback Robert Griffin III’s accuracy and timing will be put under a microscope Thursday. (Andrew Harnik/The Washington Times)

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Redskins coach Mike Shanahan is hoping rookie quarterback Robert Griffin III learns from his mistakes in training camp. Griffin will make his debut in a Washington uniform when the Redskins open preseason Thursday against Buffalo. (Barbara L. Salisbury/The Washington Times)