On October 13, 2023, a 38-year-old Luis Concepción (40-10, 29 KOs) and a 21-year-old Mexican boxer David Cuellar Contreras (25-0, 17 KOs) met in the ring.
Concepción came in to the fight on a 1-fight losing streak with a 58% KO rate, and was fighting after a gap of 1 year and 6 days. Cuellar was on a 25-fight win streak with a 68% KO rate, and fighting after a layoff of 1 month and 25 days.
David Cuellar stopped Luis Concepcion via TKO in the 8th round. Cuellar improves his record to 26-0 (18 KOs), while Concepción adds a loss to his record at 40-11.
On October 7, 2022, a 37-year-old Luis Concepción (40-9, 29 KOs) and Hernan Marquez met in the ring.
Concepción came in to the fight on a 1-fight win streak with a 59% KO rate, and was fighting after a gap of 3 months and 20 days.
Luis Concepción lost to Hernan Marquez via split decision in the 10-round fight, and adds a loss to his record at 40-10.
On November 20, 2021, a 36-year-old Luis Concepción (39-8, 28 KOs) got a shot at the flyweight WBA title held by 34-year-old Ukrainian boxer Artem Dalakian (20-0, 14 KOs).
Concepción came in to the fight on a 2-fight win streak with a 59% KO rate, and was fighting after a gap of 1 year, 9 months, and 13 days. Dalakian was on a 20-fight win streak with a 70% KO rate, and fighting after a layoff of 1 year, 9 months, and 12 days.
Artem Dalakian stopped Luis Concepción via TKO in the 9th round of the 12-round world-title fight, and successfully defended his WBA flyweight title. Dalakian improves his record to 21-0 (15 KOs), while Concepción adds a loss to his record at 39-9.
On May 11, 2019, a 33-year-old Luis Concepción (37-7, 26 KOs) and Alexandru Marin met in the ring in a super-flyweight bout.
Concepción came in to the fight on a 1-fight losing streak with a 59% KO rate, and was fighting after a gap of 8 months and 3 days.
Luis Concepción lost to Alexandru Marin via unanimous decision in the 10-round super-flyweight fight, and adds a loss to his record at 37-8.
On September 8, 2018, a 32-year-old Luis Concepción (37-6, 26 KOs) and a 27-year-old Australian boxer Andrew Moloney (17-0, 10 KOs) met in the ring in a super-flyweight bout.
Concepción came in to the fight on a 1-fight win streak with a 60% KO rate, and was fighting after a gap of 10 months and 15 days. Moloney was on a 17-fight win streak with a 58% KO rate, and fighting after a layoff of 3 months and 20 days.
Andrew Moloney stopped Luis Concepción via TKO in the 10th round. Moloney improves his record to 18-0 (11 KOs), while Concepción adds a loss to his record at 37-7.
On September 2, 2017, a 31-year-old Luis Concepción (36-5, 25 KOs) and Iran Diaz met in the ring.
Concepción came in to the fight on a 1-fight win streak with a 61% KO rate, and was fighting after a gap of 1 month and 28 days.
Luis Concepción lost to Iran Diaz via unanimous decision in the 10-round fight, and adds a loss to his record at 36-6.
On December 10, 2016, a 31-year-old Luis Concepción (35-4, 24 KOs) and a 27-year-old British boxer Kal Yafai (20-0, 14 KOs) met in the ring.
Concepción came in to the fight on a 3-fight win streak with a 61% KO rate, and was fighting after a gap of 3 months and 10 days. Yafai was on a 20-fight win streak with a 70% KO rate, and fighting after a layoff of 1 month and 18 days.
Kal Yafai defeated Luis Concepción via unanimous decision in the 12-round super-flyweight fight. Yafai improves his record to 21-0, while Concepción adds a loss to his record at 35-5.
On April 4, 2015, a 29-year-old Luis Concepción (32-3, 23 KOs) got a shot at the super-flyweight WBC title held by 26-year-old Mexican boxer Carlos Cuadras (31-0-1, 25 KOs).
Concepción came in to the fight on a 9-fight win streak with a 65% KO rate, and was fighting after a gap of 7 months and 12 days. Cuadras was on a 1-fight win streak with a 78% KO rate, and fighting after a layoff of 4 months and 22 days.
Carlos Cuadras defeated Luis Concepción via unanimous decision and successfully defended his WBC super-flyweight title. Cuadras improves his record to 32-0-1, while Concepción adds a loss to his record at 32-4.
On October 29, 2011, Luis Concepción and Hernán Márquez met again in a rematch.
Concepción came in to the fight on a 1-fight win streak with a 72% KO rate, and was fighting after a gap of 2 months and 18 days.
Luis Concepción was defending his flyweight titles and, fighting for the flyweight WBA titles against Hernán Márquez and lost via TKO in the 1st round, and adds a loss to his record at 23-3.
On April 2, 2011, the 25-year-old WBA flyweight world champion, Luis Concepción (22-1, 17 KOs), faced Hernán Márquez, in a title defense fight.
Concepción came in to the fight on a 19-fight win streak with a 73% KO rate, and was fighting after a gap of 6 months.
Luis Concepción was defending his flyweight WBA titles against Hernán Márquez and lost via TKO in the 11th round, and adds a loss to his record at 22-2.
On September 30, 2006, a 20-year-old Luis Concepción (3-0, 2 KOs) and Gilmer Baules met in the ring.
Concepción came in to the fight on a 3-fight win streak with a 66% KO rate, and was fighting after a gap of 2 months and 15 days.
Luis Concepción lost to Gilmer Baules via unanimous decision in the 4-round fight, and adds a loss to his record at 3-1.