With the way the NFL is trying to protect players from suffering head injuries and concussions, being a defensive back – particularly a safety – is hard. You can’t tackle ball-carriers high for fear of a penalty, and going low is sometimes deemed “dirty” because of the frequency that players suffer knee injuries on low tackles.

Terrelle Pryor was watching film on Tuesday, and while doing so, he sent Rams safety Cody Davis a small request: don’t go at players’ knees.

As Pryor said, it wasn’t a dirty play, but tackles of those nature can be terrifying for a receiver. If your knee locks up, it could easily result in a torn ACL and a shortened season as a result. Davis wasn’t trying to take out Pryor’s knees, obviously, it was just the easiest way to get an incredibly athletic, 6-foot-4 receiver on the ground.

You might remember the hit Odell Beckham Jr. suffered in the preseason that cost him Week 1 as a result of a high ankle sprain. Beckham’s hit, which was delivered by Briean Boddy-Calhoun, was far worse, but the result could have easily been the same.