This is a major problem for Running backs trying to block a blitzing Linebacker. How does a 5’10” running back stop a 6’3” linebacker?
Fake the block and catch the pass out of the backfield? Seriously, with 1-back offenses the RB has to be able to chip the linebacker. Many college runners just aren’t good at it.
Tackling, like everything in football, takes practice and they don’t practice tackling anymore...too much money invested in these athletes. Can’t risk injury.