4 reasons why 49ers embarrassingly lost Monday night to Vikings

Reason No. 3: 49ers pass rush was wholly absent

It's going to be hard to call him out, but All-Pro edge Nick Bosa, the reining Defensive Player of the Year and highest-paid non-quarterback in NFL history, hasn't been tallying the sacks that one would expect from him this point in the season.

Entering Week 7 with just 2.5 sacks, Bosa failed to notch another on Kirk Cousins and despite Minnesota missing starting left guard Ezra Cleveland because of a foot injury.

But, Bosa wasn't alone in the zero-sack department. Every other San Francisco defender joined him in failing to record a sack.

Defensive coordinator Steve Wilks tried bringing extra pressure, at times with dreadful results, but that didn't prevent Cousins from delivering within the pocket and without being taken down.

"We were kind of lulled to sleep," Bosa told reporters after the game when asked about the lack of a pass rush.

It certainly seemed that way, and the 49ers defense was entirely lackluster as a result.