Luke Fickell wants his team to be tough, nasty and disciplined, and for the first time as Wisconsin’s head coach, his roster features a position that embodies those traits more than any other: fullback. Jeff Grimes dabbled with the i-formation and had big bodies in the run game in his first season with the program. Still, something about a guy labeled as a tight end as the lead blocker in the i-formation felt wrong. Not only did the fullbacks throw solid blocks today, but when they touched the ball, there was a different energy on the field. Having fullbacks won’t automatically make the run game dominant, but guys with the mentality of doing whatever they can to create holes for ball carriers can’t hurt.