David Haye, Sultan Ibragimov, both Klitschko brothers, Lennox Lewis...

These are the smartest boxers on the planet. Vitali, Wladimir and Lewis were dominant champions who beat the living shit out of virtually all of their opponents and barely sustained any damage at all during their entire careers, had good business management skills and did/will retire rich and healthy.

Haye and Ibragimov not nearly the same level of success but again, they beat the shit out of nearly all their opponents, sustained barely any damage and retired healthy and wealthy enough to live comfortably the rest of their lives.

Pacquiao ought to be ashamed. How can one waste so much money!