On January 14, 1984, a 32-year-old Bobby Chacon (52-6-1, 42 KOs) got a shot at the lightweight WBA title held by 22-year-old Ray Mancini (28-1, 22 KOs).
Chacon came in to the fight on a 7-fight win streak with a 71% KO rate, and was fighting after a gap of 7 months and 30 days. Mancini was on a 8-fight win streak with a 75% KO rate, and fighting after a layoff of 1 month and 20 days.
Ray Mancini made easy work of Bobby Chacon, stopping the challenger via TKO in the 3rd. Mancini improves his record to 29-1 (23 KOs), while Chacon adds a loss to his record at 52-7-1.
On May 30, 1981, a 29-year-old Bobby Chacon (45-5-1, 38 KOs) got a shot at the super-featherweight WBC title held by Cornelius Boza Edwards.
Chacon came in to the fight on a 3-fight win streak with a 74% KO rate, and was fighting after a gap of 2 months and 18 days.
Bobby Chacon was defending his super-featherweight titles and, fighting for the super-featherweight WBC titles against Cornelius Boza Edwards and lost via RTD in the 13th round, and adds an loss to his record at 45-6-1.
On November 16, 1979, a 27-year-old Bobby Chacon (42-4-1, 36 KOs) got a shot at the super-featherweight WBC title held by 27-year-old Nicaraguan boxer Alexis Argüello (59-5, 49 KOs).
Chacon came in to the fight on a 1-fight win streak with a 76% KO rate, and was fighting after a gap of 4 months and 29 days. Argüello was on a 3-fight win streak with a 76% KO rate, and fighting after a layoff of 4 months and 8 days.
The challenger refused to continue the fight in the 7th round, and Alexis Argüello is crowned the new super-featherweight world champion. Argüello improves his record to 60-5 (50 KOs), while Chacon adds a loss to his record at 42-5-1.
On November 15, 1977, a 25-year-old Bobby Chacon (37-3, 33 KOs) and Arturo Leon met in the ring.
Chacon came in to the fight on a 10-fight win streak with a 82% KO rate, and was fighting after a gap of 2 months and 26 days.
Bobby Chacon lost to Arturo Leon via split decision in the 10-round fight, and adds an loss to his record at 37-4.
On December 7, 1975, a 24-year-old Bobby Chacon (27-2, 25 KOs) and Rafael Limón met in the ring.
Chacon came in to the fight on a 1-fight win streak with a 86% KO rate, and was fighting after a gap of 19 days.
Bobby Chacon lost to Rafael Limón via unanimous decision in the 10-round fight, and adds an loss to his record at 27-3.
On June 20, 1975, Bobby Chacon and Rubén Olivares met again in a rematch.
Chacon came in to the fight on a 7-fight win streak with a 88% KO rate, and was fighting after a gap of 3 months and 19 days. Olivares was on a 1-fight win streak with a 83% KO rate, and fighting after a layoff of 2 months and 13 days.
Rubén Olivares made very easy work of Bobby Chacon in the rematch, stopping the champion via TKO in the 2nd. Olivares improves his record to 80-5-1 (72 KOs), while Chacon adds a loss to his record at 26-2.
On June 23, 1973, a 21-year-old Bobby Chacon (19-0, 17 KOs) and a 26-year-old Mexican boxer Rubén Olivares (71-3-1, 65 KOs) met in the ring in a featherweight bout.
Chacon came in to the fight on a 19-fight win streak with a 89% KO rate, and was fighting after a gap of 1 month and 26 days. Olivares was on a 1-fight win streak with a 86% KO rate, and fighting after a layoff of 1 month and 26 days.
Rubén Olivares stopped Bobby Chacon via RTD in the 9th round. Olivares improves his record to 72-3-1 (66 KOs), while Chacon adds a loss to his record at 19-1.