Has this ever happened?

[p4pking]

Why don't they have a system of 60/40 for the winner, 70/30 if its a knock out. Why does it have to be arranged before the fight. Every other sport gives the winner more money, why should boxing be different?

Because boxing relies on individual fighters to draw fans and sell tickets. Other sports are the same way in a lot of cases, some franchises can stink for the better part of a decade and still draw much higher profits and sell more tickets than much better teams. And really, as if a fighter will agree to a 70/30 split in the event of a knockout. It's fun to talk about, but really imagine accepting a clause in which should you suffer a major concussion and suffer irreperable brain damage, you also lose out on a few million dollars you would've otherwise gone home with regardless.

[holmcall]

Boxing is a buisness and this would not make buisness sense.