Some HW's will have "experience" going in.
This has a SLIGHT effect or affect depending on their w/l ratio in the last few weeks of the HW season.
So Ali would get the benefit of his later showing, as would Frazier...ever so slight...it's still real.
Marciano might be a wash...but any Heavy that experience a slew of losses over the last 3 or 4 fights would inherit a bit of bad health.
This ebbs and flows through out the season, and would likely all work out over a 30 event season to a "zero total effect".
The fighters "evolve" so I wanted this stated.
I was not going back and "scrubbbing" the software after having set everything up for the season.
Good Luck to all.