Another example of how the NFL results are dictated to a large extent (larger than most realize) by randomness. There is some element of skill to avoiding injuries, but not a lot can be done about many of the injuries players suffer in NFL. Getting an injury or injuries to key players at the wrong time can sink your season. I know about depth and the next man up and as a coach you have to do that. Deep down though all coach's are holding their breath about injuries to certain players or position groups. For example, with the salary cap and roster limits, most teams only have 7 or 8 O-Lineman. Not all that hard to get 3-4 or even more to these guys and be really scrambling. And this without even going into the QB, or having guys already playing at less than 100%. Not an excuse, just the reality and randomness.