Robert Griffin III must be retested in 1-2 weeks, doctor says

— -- Robert Griffin III will not play in the Washington Redskins' preseason game Saturday night against the Baltimore Ravens after an independent neurologist determined that the quarterback should be retested before returning to the field.

Griffin suffered a concussion in the Redskins' second preseason game against the Detroit Lions, according to coach Jay Gruden. The team previously had announced that an independent neurologist had cleared Griffin to play.

"Per discussion with neuropsychologists and with Anthony Casolaro M.D., we had anticipated yesterday that the patient would be cleared for full participation in gameplay this weekend; however, upon further scrutiny today of the neuropsychology data, I agree with the neuropsychologist that he should be held from gameplay this weekend and be retested in one-two weeks before a firm conclusion to return to gameplay can be made," neurologist Robert N. Kurtzke said in a statement Friday night.

Just a day earlier, in his first public comments since leaving that game because of a head injury, Griffin referred all questions about the situation to the team, which has maintained that he indeed had a concussion.

On Friday, Griffin took to Twitter to express his frame of mind.

Quarterback Kirk Cousins is expected to get the start against the Ravens.