when he was knocked out by Olivares on June 20, 1975, also in Los Angeles. Limón was a rising star in the boxing world at the time; he had become a well known boxer in Mexico. On December 7, 1975, the first Chacon–Limón encounter took place, at the Plaza de Toros Calafia in Mexicali, Baja California, Mexico. Both Chacon and Limón had heavy chances at stake: both were searching for a title try at the Jr. Lightweight division at the time. The fight was fought at a quick pace from the beginning, with Limón and Chacon throwing quick combinations from the onset. The two boxers did not slow down as rounds went by: fighting at close range, the two boxers hit each other with strong punches down the stretch, leaving most boxing fans with the desire to see them fight again. No knockdowns happened in their first fight, and Limón won on a ten-round decision. Second fight Chacon–Limón II took place on April 4, 1979 at the Los Angeles Memorial Sports Arena. Both boxers were already ranked in the Jr. Lightweight division. At stake were the NABF Super Featherweight (Jr. Lightweight) title, and, perhaps more importantly, an opportunity to fight Alexis Argüello for the WBC's world Jr. Lightweight championship (both fighters would challenge Arguello for this title, Chacon was defeated by the Nicaraguan with a seventh-round technical knockout, and Limón by an eleventh-round technical knockout). Chacon–Limón II was scheduled for twelve rounds, because a regional title was at stake. Their second fight has been described by some "the best rematch in boxing history". Fighting before a mixed crowd of Chacon and Limón fans, the two boxers once again held a brawl. It was a close fight throughout the seven rounds it lasted, with both fighters exchanging blows at close range. An unintentional headbutt by Chacon to Limon however, caused for the fight to be stopped in round seven. Because the fight was stopped as a consequence of a headbutt and not an actual punch, the three judges' scorecards were brought to declare a winner. Chacon was leading on cards, however, California rules at the time stated that if one fighter leads on card at the time of the stoppage but he or she commits an unintentional head butt, the contest's result was a draw, thus the fight was declared a seven-round technical draw. Third fight By the time Chacon–Limón III