The top 20 defenses going into this weekend
1.Mich ST
2.FLa
3.Louisville
4.USC
5.VT
6.Wisconsin
7.FSU
8.Cincy
9.MD
10.Wash St
11.GT
12.Washington
13.tOSU
14.Miami
15.PSU
16.Marshall
17.Utah St
18.Arky
19.Iowa
20.OU
5-ACC
5-BIG
3-PAC
2-AAC
2-SEC
discuss..