Boxing divisional rankings: Collazo shines at flyweight, holds top spot at strawweight

Oscar Collazo, left, knocks down Neider Valdez during their flyweight bout at Frontwave Arena in Oceanside, California. Photo by Cris Esqueda/Golden Boy/Getty Images

Oscar Collazo overwhelmed and finished late replacement Neider Valdez in the second round of their flyweight fight on Saturday. Valdez stepped in on short notice when Collazo's original opponent, Joey Canoy of the Philippines, was forced to withdraw due to visa issues.

The late change also saw Collazo move up from defending his unified strawweight titles to fighting two divisions above at flyweight. The weight change made no difference as Collazo dropped the overmatched Valdez three times and forced his opponent's corner to stop the fight 25 seconds before the end of Round 2.

It was a rare occasion for Collazo to fight above his weight class, and hr is expected to return to strawweight to defend his WBA and WBO titles in his next fight. For that reason, Collazo won't be ranked at flyweight unless he decides to campaign there in the future. He remains the No. 1-ranked strawweight.

ESPN's divisional boxing rankings highlight the best in the sport in every weight class. Rankings will change based on recent results and performances. Fighters who have announced they are moving to a different weight class will be ranked in that new division, if warranted, only once they fight in that weight class. Fighters who currently own titles in two divisions can be ranked in both.

Fighters who haven't competed in the past 12 months -- and don't have a fight scheduled -- will be dropped from the rankings until they fight again. Any fighter who tests positive for a performance-enhancing substance will also be removed. That boxer will be eligible to reenter the rankings after his next bout.

For a list of the current champions in all weight classes, click here. For ESPN women's divisional rankings, click here.


HEAVYWEIGHT (UNLIMITED)


CRUISERWEIGHT (UP TO 200 POUNDS)


LIGHT HEAVYWEIGHT (UP TO 175 POUNDS)


SUPER MIDDLEWEIGHT (UP TO 168 POUNDS)


MIDDLEWEIGHT (UP TO 160 POUNDS)


JUNIOR MIDDLEWEIGHT (UP TO 154 POUNDS)


WELTERWEIGHT (UP TO 147 POUNDS)


JUNIOR WELTERWEIGHT (UP TO 140 POUNDS)


LIGHTWEIGHT (UP TO 135 POUNDS)


JUNIOR LIGHTWEIGHT (UP TO 130 POUNDS)


FEATHERWEIGHT (UP TO 126 POUNDS)


JUNIOR FEATHERWEIGHT (UP TO 122 POUNDS)


BANTAMWEIGHT (UP TO 118 POUNDS)


JUNIOR BANTAMWEIGHT (UP TO 115 POUNDS)


FLYWEIGHT (UP TO 112 POUNDS)


JUNIOR FLYWEIGHT (UP TO 108 POUNDS)


STRAWWEIGHT (UP TO 105 POUNDS)