Best fights of Oscar Collazo
Over 6 years as a professional, Oscar Collazo has compiled a 15-0 (12) record, including ten title fights across two weight classes. Here are his top 10 best fights.
1. Oscar Collazo stops Melvin Jerusalem
On May 27, 2023 Oscar Collazo fought Melvin Jerusalem for the WBO strawweight title. Collazo was 26 years old with a record of 6-0, and Jerusalem was 29 with a record of 20-2. Collazo was on an undefeated 6-fight winning streak and Jerusalem was on a 9-fight winning streak. Collazo stopped Melvin Jerusalem via retirement in the 7th round. Crowned the new strawweight champion.
2. Oscar Collazo KOs Thammanoon Niyomtrong
On November 16, 2024 Oscar Collazo, the WBO strawweight champion, met Thammanoon Niyomtrong, the WBA (Super) strawweight champion, in a title unification fight. Collazo was 27 years old with a record of 10-0, and Niyomtrong was 34 with a record of 25-0. Collazo was on an undefeated 10-fight winning streak and Niyomtrong was on an undefeated 25-fight winning streak. Collazo stopped Thammanoon Niyomtrong via TKO in the 7th round. Became the unified strawweight champion.
3. Oscar Collazo KOs Jayson Vayson
On September 20, 2025 Oscar Collazo defended his WBA (Super), WBO, and The Ring strawweight titles against Jayson Vayson. Collazo was 28 years old with a record of 12-0, and Vayson was 27 with a record of 14-1-1. Collazo was on an undefeated 12-fight winning streak and Vayson was on a 4-fight winning streak. Collazo stopped Jayson Vayson via TKO in the 7th round. Defended the titles.
4. Oscar Collazo KOs Neider Valdez
On June 20, 2026 Oscar Collazo fought Neider Valdez for the vacant WBO International flyweight title. Collazo was 29 years old with a record of 14-0, and Valdez was 25 with a record of 15-3-3. Collazo was on an undefeated 14-fight winning streak. Collazo stopped Neider Valdez via KO in the 2nd round. Won the vacant title.
5. Oscar Collazo KOs Edwin Cano Hernandez
On March 29, 2025 Oscar Collazo defended his WBO, The Ring, and WBA (Super) strawweight titles against Edwin Cano Hernandez. Collazo was 28 years old with a record of 11-0, and Hernandez was 27 with a record of 13-2-1. Collazo was on an undefeated 11-fight winning streak and Hernandez was on a 2-fight winning streak. Collazo stopped Edwin Cano Hernandez via KO in the 5th round. Defended the titles.
6. Oscar Collazo stops Jesus Haro
On March 14, 2026 Oscar Collazo defended his WBA (Super), WBO, and The Ring strawweight titles against Jesus Haro. Collazo was 29 years old with a record of 13-0, and Haro was 23 with a record of 13-3. Collazo was on an undefeated 13-fight winning streak and Haro was coming off a win. Collazo stopped Jesus Haro via retirement in the 6th round. Defended the titles.
7. Oscar Collazo KOs Reyneris Gutierrez
On January 27, 2024 Oscar Collazo defended his WBO strawweight title against Reyneris Gutierrez. Collazo was 27 years old with a record of 8-0, and Gutierrez was 0 with a record of 0-0. Collazo was on an undefeated 8-fight winning streak. Collazo stopped Reyneris Gutierrez via TKO in the 3rd round. Defended the title.
8. Oscar Collazo defeats Gerardo Zapata
On June 7, 2024 Oscar Collazo defended his WBO strawweight title against Gerardo Zapata. Collazo was 27 years old with a record of 9-0, and Zapata was 0 with a record of 0-0. Collazo was on an undefeated 9-fight winning streak. Collazo won via unanimous decision. Defended the title.
9. Oscar Collazo stops Garen Diagan
On August 26, 2023 Oscar Collazo defended his WBO strawweight title against Garen Diagan. Collazo was 26 years old with a record of 7-0, and Diagan was 0 with a record of 0-0. Collazo was on an undefeated 7-fight winning streak. Collazo stopped Garen Diagan via retirement in the 6th round. Defended the title.
10. Oscar Collazo KOs Pedro Villegas
On December 3, 2021 Oscar Collazo fought Pedro Villegas for the vacant WBO Latino strawweight title. Collazo was 24 years old with a record of 3-0, and Villegas was 0 with a record of 0-0. Collazo was on an undefeated 3-fight winning streak. Collazo stopped Pedro Villegas via TKO in the 3rd round. Won the vacant title.