The preseason rankings have always been a complete waste of time, and serve no productive purpose, other than promoting website clicks and readership. Wisconsin at 4, Miami, and USC stand out to me. There are probably several better examples that I am too lazy to look up. (was Louisville ranked this year in the preseason?)
Wisconsin lost a ton of talent on defense and never should have been ranked #4. Then again Hornibrook, in the Orange Bowl made that offense look much better than any Wisconsin team lI have seen with the exception of 2011 Russell Wilson. In defense of the oters, Wisconsin did have Taylor, the O Line, and two other good backs returning, so although not #4 they should have been better than 7-5. I though Paul Cryst was a great OC when at Wisconsin, but their team looked awful on offense this year. I will credit Joe Rossie and the team for what they did though.