which is why you tackle the torso. it's a helluva lot easier to wrap around something that isn't flapping about like legs or arms... you'll see people hit high and the carrier have the upper body strength to resist it... or low and the knees keep churning kicking the would be tackler away... but wrapping the torso? they're going down...
it's not a macho tackle, but it works 99.9% of the time, where hitting alone only works i'd guess 60% of the time, and hitting high+wrap the carrier is getting a couple more yards, and hitting low+wrap is absolutely dangerous.
Bingo. That’s why so many now are teaching rugby style tackling. Much more reliable and less risky physicall. Chris Ash brought that to OSU, so to Northern’s point, when you see them go high and miss, they will get chewed out.
Most defensive yelling is not audibles, but rather clarity around one of two things: gap assignments, which are predetermined by the defensive play call but might be hard to figure out for a given offensive formation or shift. Or, player assignments that are designed to change based on offensive shifts or motions.
Then there are the real “audibles”, where the defense is changing the call completely based on something they or the coaches see the offense.
Great example was a couple years ago when the Badgers were killing OSU with a Jet sweep because they were in man coverage. The CB was trying to move across the field with the WR, but consistently got lost in traffic, and the ball carrier was getting around the end.
The halftime adjustment was to call for a rotation when the sweep player started in motion, with the responsible CB rotating to wher the free safety was, up high, and the FS (Malik Hooker) to come down and take the WR in man.
This allowed the FS to come somewhat downhill and visually avoid traffic, and make the tackle. It worked well...they stuffed it 3-4times so the badgers abandoned it after that.
So that required a communication to let the other DBs to know their assignment changed once the rotation began.
https://goo.gl/images/iQNoEz