I’m not sure. It’s gone now but there used to be footage of Jiro Wantanbe vs Khaosai Galaxy in an exhibition.
I believe this was the big benefit card at the Forum from February 25, 1986. The main event was Azumah Nelson defending his title against Marcos Villasana and the remainder of the card was past stars fighting 4 rounders. But they weren't exhibitions. These were real fights where a decision was rendered. Also on this card was Ruben Olivares, Carlos Zarate and Rafael Herrera. In fact, this was the catalyst for Zarate to begin his comeback which eventually saw him fight for the super bantamweight title twice. The benefit card was to aid victims of a Mexican earthquake. BTW, this was not Jorge Vaca that Cuevas was fighting but Felipe Vaca, who was Mexican welterweight champ at one time. Never recall much about him other than he duked it out with Hedgemon Lewis and was KO'd in 3 or 4 rounds when Lewis was #1 contender.