You have to pick them yourself. Incidentially, the real-life reliever's award is the
Rolaids Relief Man Award. Their system is:
Tough Save (entering the game with tying run on base) = +4 points
Save = +3 points
Win = +2 points
Loss = -2 points
Blown Save = -2 points
You'd have a hard time finding the "tough saves" in OOTP, I'd think.