“Both of their backs, the way they use them, obviously, they’ve done a really good job with Kareem and Nick both together,” Harbaugh said. “Nick hurt us badly in the first game. They do a good job of blocking. They do a good job of scheming up the run game. But also, he’s really special. He’s really fast. He’s really big, and he can accelerate with the best of them. He’s a tackle-breaker. He has good one-cut ability, laterally, to make a guy miss, and he can lower his pads. So, I really do believe he’s one of the best backs in football.