On August 19, 1991, a 26-year-old Mario Martínez (49-8-2, 30 KOs) and Ramon Marchena Jr met in the ring for the 2nd time,.
Martínez came in to the fight on a 1-fight win streak with a 50% KO rate, and was fighting after a gap of 2 months and 2 days.
Mario Martínez lost to Ramon Marchena Jr via TKO in the 8th round, and adds a loss to his record at 49-9-2.
On March 2, 1991, a 25-year-old Mario Martínez (48-7-2, 29 KOs) got a shot at the lightweight WBO title held by 24-year-old South African boxer Dingaan Thobela (3-0, 2 KOs).
Martínez came in to the fight on a 1-fight losing streak with a 50% KO rate, and was fighting after a gap of 7 months and 14 days. Thobela was on a 3-fight win streak with a 66% KO rate, and fighting after a layoff of 5 months and 8 days.
Dingaan Thobela defeated Mario Martínez via unanimous decision and successfully defended his WBO lightweight title. Thobela improves his record to 4-0, while Martínez adds a loss to his record at 48-8-2.
On July 16, 1990, a 24-year-old Mario Martínez (48-6-2, 29 KOs) and Miguel Gonzalez met in the ring.
Martínez came in to the fight on a 1-fight win streak with a 51% KO rate, and was fighting after a gap of 3 months and 14 days.
Mario Martínez lost to Miguel Gonzalez via points decision in the 10-round fight, and adds a loss to his record at 48-7-2.
On November 24, 1989, a 24-year-old Mario Martínez (47-5-2, 29 KOs) and a 25-year-old Australian boxer Jeff Fenech (23-0, 18 KOs) met in the ring.
Martínez came in to the fight on a 1-fight losing streak with a 53% KO rate, and was fighting after a gap of 8 months and 30 days. Fenech was on a 23-fight win streak with a 78% KO rate, and fighting after a layoff of 7 months and 16 days.
Jeff Fenech defeated Mario Martinez via unanimous decision in the 12-round fight. Fenech improves his record to 24-0, while Martínez adds a loss to his record at 47-6-2.
On February 25, 1989, Mario Martínez and Azumah Nelson met again in a rematch.
Martínez came in to the fight on a 1-fight win streak with a 54% KO rate, and was fighting after a gap of 5 months and 20 days. Nelson was on a 16-fight win streak with a 70% KO rate, and fighting after a layoff of 2 months and 15 days.
In the rematch, Azumah Nelson stopped Mario Martínez via TKO in the final round of the 12-round world-title fight, and successfully defended his WBC super-featherweight title. Nelson improves his record to 30-1 (22 KOs), while Martínez adds a loss to his record at 47-5-2.
On February 29, 1988, 22-year-old Mario Martínez (46-3-2, 29 KOs) and 29-year-old Azumah Nelson (26-1, 19 KOs) fought for the vacant WBC super-featherweight title.
Martínez came in to the fight on a 8-fight win streak with a 56% KO rate, and was fighting after a gap of 3 months and 17 days. Nelson was on a 13-fight win streak with a 70% KO rate, and fighting after a layoff of 6 months.
Azumah Nelson defeated Mario Martínez via split decision . Nelson improves his record to 27-1, while Martínez adds a loss to his record at 46-4-2.
On November 7, 1985, a 20-year-old Mario Martínez (38-2-2, 22 KOs) and a 24-year-old American boxer Roger Mayweather (21-3, 14 KOs) met in the ring.
Martínez came in to the fight on a 5-fight win streak with a 52% KO rate, and was fighting after a gap of 2 months and 23 days. Mayweather was on a -1-fight win streak with a 58% KO rate, and fighting after a layoff of 4 months.
Roger Mayweather defeated Mario Martinez via split decision in the 10-round fight. Mayweather improves his record to 22-3, while Martínez adds a loss to his record at 38-3-2.
On September 13, 1984, 19-year-old Mario Martínez (33-1-2, 20 KOs) and 22-year-old Julio Cesar Chavez (43-0, 37 KOs) fought for the vacant WBC super-featherweight title.
Martínez came in to the fight on a 13-fight win streak with a 55% KO rate, and was fighting after a gap of 2 months and 21 days. Chávez was on a 43-fight win streak with a 86% KO rate, and fighting after a layoff of 3 months.
Julio César Chávez stopped Mario Martínez via TKO in the 8th round of the 12-round world-title fight. Chávez improves his record to 44-0 (38 KOs), while Martínez adds a loss to his record at 33-2-2.
On June 6, 1981, a 15-year-old Mario Martínez (14-0-1, 8 KOs) and Rosendo Alonso met in the ring.
Martínez came in to the fight on a 1-fight win streak with a 53% KO rate, and was fighting after a gap of 1 month and 12 days.
Mario Martínez lost to Rosendo Alonso via points decision in the 10-round fight, and adds a loss to his record at 14-1-1.