'Zimmer, a defensive tackle out of Division II Ferris State, had to fight for every bit of attention he got coming from a small school. He had to contact his own agent to help get interest out there. He wasn't invited to the NFL Scouting Combine, so he had to attend the NFL Regional Combine, where he impressed in nearly every drill. From there, he had to compete at Michigan's pro day because Ferris State didn't have one.'