On April 4, 1990, Edwin Rosario (39-3, 35 KOs), the lightweight WBA champion, defends his title against fellow Puerto Rican challenger, Juan Nazario (21-2, 15 KOs).
Edwin Rosario is coming in to the fight on a 8-fight win streak with a 83% KO rate; his last fight was a 6th round TKO victory over Anthony Jones, 8 months and 26 days ago. Juan Nazario is on a 3-fight win streak with a 65% KO rate, with his last fight being a 3rd round TKO win over Higinio DeLeon, 5 months and 14 days ago.
The winning odds are at 89.7-10.3 in favor of Juan Nazario. Edwin Rosario may have moments of brilliance during the fight but it won't be enough for him to get the victory.
In the rematch, the champion refused to continue the fight in the 8th round, and Juan Nazario is crowned the new WBA lightweight world champion — in his first world-title fight. Nazario improves his record to 22-2 (16 KOs), while Rosario adds a loss to his record at 39-4.