With the victory, Manny Pacquiao is became a six-division world champion, a feat only one other boxer has accomplished.
The welterweight division will be the fourth different division Pacquiao will be fighting in in as many bouts.
This fight is for the Ring Magazine Lightweight Title.
This fight was for the WBA Welterweight Title.
The referee stopped the fight in the 9th round after Shane Mosley took control and was punishing Margarito with right hands.
This is the first time Oscar Dela Hoya has fought in the welterweight division in seven years. It is also Manny Pacquiao's first fight in the division, just months after jumping to the lightweight division.
Oscar Dela Hoya did not come out for the ninth round as Nacho Beristain recommended the referee to stop the fight.
Oscar dela Hoya tapped Nacho Beristain as his trainer for this fight.
This will be Pacquiao's first fight at Welterweight.
Mosley was able to knock out Mayorga with a second left in the 12th round.
Casamayor's Ring Magazine title is on the line.
This fight is Juan Manuel's first at lightweight.
This fight features fighters coming out of the first loss of their professional careers.
With the victory, Manny Pacquiao becomes the first Asian to win 4 world titles in 4 different weight divisions.
This will be Manny Pacquiao's first fight in the lightweight division.
This fight is for David Diaz's WBC Lightweight Belt.
Cotto wins by technical knock-out in the 5th round.
Casamayor wins by technical knock out in the 10th round.
Juan Manuel Marquez was knocked down in the third round.
Manny Pacquiao wins both titles via a split decision. The judges scored it 115-112 Marquez, 115-112 Pacquiao, and 114-113 Pacquiao.