No. 18 Michigan Wolverines football is set for a top-20 showdown with No. 11 USC. The Wolverines’ defense will have to step up going against a potent offense. We take a look at some of the blitz numbers for the Maize and Blue, discuss USC’s new-look defense and talk about an interesting comment an analyst made this week about U-M vs. TCU in 2022. RELATED• Previewing Michigan vs. USC with a Trojans insider• Eye in the sky: The Alex Orji offense, a Michigan WR who will play more, handing out helmet stickers 1. Michigan defense has upped the aggressivenessThe big question in all areas heading int…