Our defensive line has produced 1 sack in 3 games. The number of pass attempts in those three games has added up to 111.
Imagine if we go the entire season only getting 1 sack from our defensive line for every 111 pass attempts. At the end of the season, that's what...maybe three sacks? Maybe four? And that sack came against perhaps 3 of Michigan's weakest 4 opponents this season.
If we include blitzing players from other positions, we've got 2 sacks. So we're on pace for 6-8 sacks this year. Brandon Graham had 10.5 last year on his own, IIRC.