Urlacher = revolutionary? He's good, but I wouldn't call him that.
Guys who *are* revolutionary:
1. LT. Tackles rarely slid outside to pick up OLBs until he came along. That job was usually left to a RB kept in to block...futile vs. LT. Even as line blocking schemes changed thanks to him, even he usually required extra attention like a TE or RB to help the tackle.
2. Darrell Green. Was the first CB *routinely* put on the best WR (dubbed the MDR...most dangerous receiver), no matter which side he lined up. Deion Sanders may have been the best ever at this, but Green started the trend.
3. Randy White. First DT who required *constant* double-teams (sometimes triple-teams). The guy was strong as an ox and the key defensively to those outstanding 70s Cowboys teams.
4. Deacon Jones. He was Reggie White before Reggie White was Reggie White.
5. Ronnie Lott. Cornerback speed, linebacker hitting ability. Rodney Harrison has nothing on Lott in his prime.
6. **** Butkis. First *feared* hitting machine MLB. Think 2000 Ray Lewis and this was Butkis.
I'm sure I'm forgetting a few, but I think I got the general positions covered (DT, DE, OLB, ILB/MLB, S, CB).
Regards,
Chris