1989-03-03 Elvis Alvarez w pts 12 Miguel Mercedes, Ivan Bedout Basketball Theatre, Medellin, Colombia - WBO
1989-03-03 Elvis Alvarez w pts 12 Miguel Mercedes, Ivan Bedout Basketball Theatre, Medellin, Colombia - WBO. Referee: Isaac Herrera. Scorecards: 119-111, 120-113, 119-110. Fighting to become the WBO’s first champion at the weight, Alvarez showed excellent southpaw skills, allied to solid punching, to outbox Mercedes in the majority of rounds. This was something of an upset as Mercedes had been favoured to win by the short route, but as hard as he tried he could not find the punches to end the contest summarily. A fairly sketchy report made no mention of any knockdowns.
Alvarez relinquished the WBO version of the title in March 1990 due to a lack of big money fights and in order to try for a crack at one of the other organisation's crowns. Following this, Isidro Perez and Angel Rosario were matched for the vacant title.