On the random side, I have an 79 Live Arodys Vizcaino that I bought through the auction very early in my season (expansion iron level team).
As I found out after I bought him, this Arodys played the last seven years for someone in the Diamond Level and was even a regular RP for five years in Perfect League.
Now he's down in Iron League as my closer, and playing extremely well.
Moral of the story is to please auction off your sick and old, Diamond Leaguers+...us on the bottom can really use them