Garrick would do well to lower his centre of gravity when getting to the defensive line,he runs so upright and exposes himself to being pushed back,lowering the shoulder a bit and initiating the contact might do him well.
Agree, he has the talent and appears to have the grit and brains of a footballer, but is just a bit short on the physical side at the moment .... you are 100% correct .. a few kg's of power and some improvement in technique will do wonders for his game ....