It should be as follows:
Preseason Game #1:
50Preseason Game #2:
50Preseason Game #3, #4, Regular Season and Playoffs: 100
Why?
Players enter Preseason Game #1 with what I'll call zero conditioning. Game engine is like Jason Vorhees with a machete, slicing and dicing at every player on every early play. It's not fair to come out of the gate with a 100 injury rate setting.
I'm fair....for roster management GMs and depth believers I propose a split down the middle and therefore Preseason Games #3 and #4 go back to the mean 100 setting.