Mauricio Aceves’ WBO First: The Lightweight
On May 6, 1989, Mauricio Aceves defeated Amancio Castro by unanimous decision over twelve rounds to become the first WBO lightweight champion.
Mauricio Aceves did not win the first WBO lightweight title fight. He had to come back for it. His January 1989 bout with Colombia’s Amancio Castro ended in a draw, leaving the new championship vacant. Four months later, the Mexican contender returned to face Castro again—and this time he left Santa Ana with the belt and a place in boxing history as the WBO’s inaugural lightweight champion.
The rematch took place on May 6, 1989, before about 3,000 fans at Santa Ana Stadium. Both men began aggressively, but Aceves found his range with a left jab and right hand as the middle rounds unfolded. A clash of heads opened a deep cut over his right eye in the second. Bleeding through the rest of the fight, he kept working and won a unanimous decision over 12 rounds (BoxRec title chronology). The judges’ cards were close, but agreed: 116–113, 116–113 and 116–114.
Aceves made one defense of the championship, and it demanded patience. Oscar Bejines was ahead for much of their August bout before Aceves stopped him in the 10th round. The reign ended the following year in Brownsville, Texas, where South Africa’s Dingaan Thobela took the title by split decision after 12 rounds on September 22, 1990. Aceves’ tenure at the top was brief, but it gave the new WBO division its first champion.
He continued to face notable lightweights after losing the belt. In 1995, he met unbeaten prospect Shane Mosley in Anaheim. Before the fight, Aceves insisted he still had the power to beat the young Californian; Mosley stopped him in the fourth round. The result marked the end of Aceves’ run as a title contender, but the earlier chapter remains his defining achievement: he won the WBO’s first lightweight crown in a rematch that demanded both skill and resolve.
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Sources and further reading
- Los Angeles Times: Aceves wins the inaugural WBO lightweight title
- BoxRec: WBO lightweight title fight chronology
- Los Angeles Times: Aceves–Páez fight report
- Los Angeles Times: Aceves prepares to face Shane Mosley
- BoxRec: Mauricio Aceves career record
Sources
Article Tags
Mauricio Aceves, Boxing, Boxing History, Championship Fights
