Chris Cooley is warning the public that rookie quarterback Robert Griffin III can't cure what ails the Redskins all by himself. "The biggest thing as far as the line and skill positions is to be right," Cooley told The Washington Post. "There are specific rules in our offense, and there are specific ways plays are run, and we've been unsuccessful over the last couple years because you can look back at plays and you can say, 'This is great except for one or two guys.' We can't be wrong." Cooley has played with seven different starting quarterbacks in Washington.