Injury is a persistent worry for dual-threat quarterbacks such as Robert Griffin III, who figures to venture outside of the pocket more than a conventional drop back passer.On Wednesday, though, the prized Redskins rookie allayed some of those concerns when answering a question about avoiding big hits while carrying the ball.Ive told people this from the get-go: If I need to slide or run out of bounds, Im going to slide or run out of bounds, said Griffin, whose 6 foot 2, 217-pound frame is lean and wiry. But if its fourth and one with sixth seconds left on the clock in the fourth quarter, I dont care who that linebacker. You better believe Im going to try to get in that end zone. So it just depends on the situation.As a sophomore at Baylor in 2009, he suffered a season-ending knee injury when he was crunched for a loss on a fourth-and-two option play against Northwestern State. The injury occurred on the final play of the opening series of the game. If its in the first quarter, Im going to slide and run out of bounds with the best of them, Griffin said Wednesday. But if the games on the line, dont expect me to try and slide or get out of the way.Griffin also said when he chooses to slide or run out of bounds, it will be out of respect for teammates and fans.I dont look at sliding or running out of bounds as a shot to my pride, he added. Ive done it before. Its the NFL. Guys are bigger, faster stronger and they hit a little harder, so I respect that. Ill also respect my teammates by making sure I stay healthy and make sure the fans stay healthy as well.