The Michigan defensive line was supposed to be a question mark heading into the year, but the unit was one of the spring’s most pleasant surprises. But the interior line — specifically, the pass rush there — is what needed work, and Whittingham told us Monday they’re making progress. And Jonah Lea’ea is another guy that is playing as good of football as anybody up front. ” He’s a big run stopper, and there are a couple other guys that are playing good football. Michigan grad student Nathaniel Staehling’s emergence has eased some concern here, but others have to step up.