Tim Tszyu faces Terence Spence Jr this weekend for the big welterweight title.
Tszyu fell to Spence years ago when he was still a junior boxer.
At present Tszyu seeks the win to erase that memory.
Spence beat him by a thin margin in court then, now also hunts a decisive win.
The rematch lands live on PPV, giving supporters a November rematch option if necessary.