Collazo Retains Strawweight Titles with Dominant Win Over Haro

Oscar Collazo makes Jesus Haro quit in one-sided WBA, WBO title defense

Mar. 15, 2026 at 4:55am

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Oscar Collazo retained his WBA and WBO strawweight boxing world championship titles with a dominant performance against Jesus Haro at the Honda Center in Anaheim, California. Collazo put a brutal beatdown on the overmatched Haro, landing hard body shots and forcing Haro to quit on his stool after the sixth round.

Why it matters

Collazo is the reigning champion in the 105-pound strawweight division and has firmly established himself as the top fighter in the weight class. His one-sided victory over Haro further solidifies his standing and sets up a potential rematch with WBC champion Melvin Jerusalem, whom Collazo defeated in 2023.

The details

Collazo (14-0, 11 KOs) controlled the fight from the opening bell, fighting at a high pace, moving quickly, and landing punishing shots to Haro's body and head. Haro (13-4, 2 KOs) tried to survive by moving around the ring, but Collazo continued to stalk him and break him down. After landing several hard body shots in the fourth and fifth rounds, Collazo sensed Haro was tiring and turned up the pressure, eventually forcing Haro to quit on his stool after the sixth round.

  • The fight took place on Saturday, March 15, 2026 at the Honda Center in Anaheim, California.

The players

Oscar Collazo

The reigning WBA and WBO strawweight boxing world champion, who has dominated the 105-pound division.

Jesus Haro

A 23-year-old California boxer who challenged Collazo for the titles, but was overmatched and ultimately quit on his stool after the sixth round.

Melvin Jerusalem

The WBC strawweight champion, whom Collazo defeated in 2023 and is now calling for a rematch against.

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What they’re saying

“I knew he was going to come just to survive.”

— Oscar Collazo

“I landed hard body shots in the fourth and fifth, roughing him up, and I looked at his corner, and he was breathing heavily. So I put on the gas pedal, and went for him.”

— Oscar Collazo

“The body shots were having an effect [on him] in the fifth round. I knew sooner or later that I'd get the stoppage if I stayed calm, used the jab, [kept using] body shots and just made him move to stress him out entirely.”

— Oscar Collazo

“I'm the king of the 105-pound champions. I'll fight anybody. Melvin, I hope you win May 18. I'm coming for you.”

— Oscar Collazo

What’s next

Collazo is now calling for a rematch against WBC champion Melvin Jerusalem, whom he defeated in 2023. Collazo will be watching Jerusalem's next fight on May 18 with interest, hoping to do it all over again if Jerusalem is victorious.

The takeaway

Oscar Collazo's dominant victory over Jesus Haro further cements his status as the top fighter in the strawweight division. With his sights set on a rematch against WBC champion Melvin Jerusalem, Collazo is positioning himself to unify the 105-pound titles and solidify his place among the pound-for-pound elite.