Manny Pacquiao, who at 46 fought reigning WBC welterweight Mario Barrios to a majority draw, explained the source of his astonishing stamina.

Manny Pacquiao returns from retirement on Saturday night to face WBC welterweight champion Mario Barrios. Whether Pacquiao's decision to return to the ring proves to be ill-advised or a moment that grows his legend is still to be seen.

Boxing's only eight-division champ unretired to take a record-breaking title shot—and he says he's as fit as ever.

Manny Pacquiao looks to make boxing history in his return to the ring at 46 with his longtime trainer, Freddie Roach, in his corner yet again.