When No. 8 Wisconsin plays at No. 4 Michigan on Saturday, there will be two seemingly polar opposites coaching on the sidelines.
The Wolverines' Jim Harbaugh is about as close as it gets to a rock star in college football. Hardly a day has gone by since his return to Ann Arbor that Harbaugh hasn't made headlines, with his globe-hopping satellite camps, rap video cameos, famous friends and, of course, his Twitter-melting social media jabs.
Then there's the Badgers' Paul Chryst, who's more like a soundboard engineer than a rock star. Chryst can seem almost allergic to individual attention or a jarring quote.