Before we can talk about who the hardest players in NFL history were, we need to first define what "tough" means.
Toughness cannot be quantified in any way. It's something that can't be touched or seen
yet it can take many forms. It is not possible to weigh, bottle, or package it in any way
yet it can take many forms. It is not possible to weigh, bottle, or package it in any way
However, you will recognise it when you see it. Sometimes, you may even physically feel it.
Being tough means being reliable at all times. Grace under pressure. Unwavering concentration, notwithstanding the gravity of the situation.