Newly-crowned WBO minimumweight champion Oscar Collazo makes the first defense of his belt against Filipino contender Garen Diagan at Coliseo Roberto Clemente in San Juan, Puerto Rico.
1985
2010
2009
2020
2016
1986
1960
2025
1997
2017
1995
2018
2008
2021
2015
1951
—
1971
2023
