Player rating for tournaments across all installments of Heroes.

Don't mislead the attentive listeners :)
10 tournaments * 100 = 1000

Why aren't you using the infamous aging mechanic? After all, you need to apply -10% after each round, so recalculate it... What will you get then? You will only score 999 points after completing 66 tournaments... And I won't even mention 1000 :)