
Originally Posted by
chancellor
Combination of factors, IMO. Here's my thoughts: - Change in method of tackling: Defenders don't dare go high, so there's a lot more low hits. I think that's a given. It seems there's more tackling that involves twisting the player down, also. I might be wrong on that one, but just an eye test. - Size/speed of defenders. There's more hybrid DB/LB types with 4.4-4.5 speed and weigh 210-225 lbs. DLmen run sub 5.0 weighing over 300 lbs. A recent example - if you watched the Chiefs-Chargers game, Chris Jones came back and covered 15-20 yards incredibly fast and just blasted Spiller. If a guy has his leg in the ground and is making a cut and gets hit with the speed and mass a guy like Chris Jones has, it's often going to end badly. - Speed of RBs/WRs - so many guys run 4.3s, best run 4.2s and are making explosive cuts at those speeds. There's been a lot of non-contact/limited contact injuries that I'd guess the muscle strength and speed are beginning to exceed the capacity of the joints to handle it.