We open up the vault to bring you #onthisday free fight between #sergiomartinez and #kellypavlik. It was an upset and Martinez claimed the WBC title.

Next Up for Top Rank Boxing, Undefeated Kazak phenom Janikbek “Qazaq Style” Alimkhanuly will defend his WBO middleweight world title in the main event against Canadian contender Steven Butler on Saturday, May 13, at Stockton Arena in Stockton, California.

In the co-feature, former two-time world title challenger Jason “Mayhem” Moloney will face big-punching Filipino contender Vincent Astrolabio for the vacant WBO bantamweight title.

Alimkhanuly-Butler and Moloney-Astrolabio will be broadcast live on ESPN, ESPN Deportes and ESPN+ at 10 p.m. ET/7 p.m. PT.

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