Griffin stands by his “doubters” tweet

Griffin stands by his “doubters” tweet

Some folks conjure imaginary friends.  Washington quarterback Robert Griffin III has crafted some imaginary enemies.  On Wednesday, he chastised his unidentified — and possibly non-existent — “doubters” via Twitter.  On Thursday, Griffin dug in even deeper. “As far as I’m concerned, I said what I needed to say,” Griffin said Thursday, via the Associated Press. …