On June 16, 2020, a 34-year-old Antonio DeMarco (33-8-1, 24 KOs) and a 28-year-old American boxer Giovani Santillan (25-0, 15 KOs) met in the ring.
DeMarco came in to the fight on a 2-fight losing streak with a 57% KO rate, and was fighting after a gap of 11 months and 3 days. Santillan was on a 25-fight win streak with a 60% KO rate, and fighting after a layoff of 6 months and 25 days.
Giovani Santillan defeated Antonio DeMarco via majority decision in the 10-round fight. Santillan improves his record to 26-0, while DeMarco adds a loss to his record at 33-9-1.
On July 13, 2019, a 33-year-old Antonio DeMarco (33-7-1, 24 KOs) and a 30-year-old American boxer Jamal James (25-1, 12 KOs) met in the ring.
DeMarco came in to the fight on a 1-fight losing streak with a 58% KO rate, and was fighting after a gap of 8 months and 23 days. James was on a 5-fight win streak with a 46% KO rate, and fighting after a layoff of 4 months and 20 days.
Jamal James defeated Antonio DeMarco via unanimous decision in the 10-round fight. James improves his record to 26-1, while DeMarco adds a loss to his record at 33-8-1.
On October 20, 2018, a 32-year-old Antonio DeMarco (33-6-1, 24 KOs) and Maxim Dadashev met in the ring in a super-lightweight bout.
DeMarco came in to the fight on a 2-fight win streak with a 60% KO rate, and was fighting after a gap of 1 year and 6 days.
Antonio DeMarco lost to Maxim Dadashev via unanimous decision in the 10-round super-lightweight fight, and adds an loss to his record at 33-7-1.
On December 12, 2015, a 29-year-old Antonio DeMarco (31-5-1, 23 KOs) and a 25-year-old American boxer Omar Figueroa Jr. (25-0-1, 18 KOs) met in the ring.
DeMarco came in to the fight on a 2-fight losing streak with a 62% KO rate, and was fighting after a gap of 5 months and 22 days. Figueroa Jr. was on a 15-fight win streak with a 69% KO rate, and fighting after a layoff of 7 months and 3 days.
Omar Figueroa Jr. defeated Antonio DeMarco via unanimous decision in the 12-round fight. Figueroa Jr. improves his record to 26-0-1, while DeMarco adds a loss to his record at 31-6-1.
On June 20, 2015, a 29-year-old Antonio DeMarco (31-4-1, 23 KOs) and a 28-year-old Cuban boxer Rances Barthelemy (22-0, 13 KOs) met in the ring.
DeMarco came in to the fight on a 1-fight losing streak with a 63% KO rate, and was fighting after a gap of 6 months and 29 days. Barthelemy was on a 22-fight win streak with a 59% KO rate, and fighting after a layoff of 2 months and 25 days.
Rances Barthelemy defeated Antonio DeMarco via unanimous decision in the 10-round fight. Barthelemy improves his record to 23-0, while DeMarco adds a loss to his record at 31-5-1.
On November 22, 2014, a 28-year-old Antonio DeMarco (31-3-1, 23 KOs) got a shot at the super-lightweight WBA (Regular) title held by 25-year-old American boxer Jessie Vargas (25-0, 9 KOs).
DeMarco came in to the fight on a 3-fight win streak with a 65% KO rate, and was fighting after a gap of 2 months and 30 days. Vargas was on a 25-fight win streak with a 36% KO rate, and fighting after a layoff of 3 months and 20 days.
Jessie Vargas defeated Antonio DeMarco via unanimous decision and successfully defended his WBA (Regular) super-lightweight title. Vargas improves his record to 26-0, while DeMarco adds a loss to his record at 31-4-1.
On November 17, 2012, the 26-year-old WBC lightweight world champion, Antonio DeMarco (28-2-1, 21 KOs), faced a 23-year-old American boxer Adrien Broner (24-0, 20 KOs), in a title defense fight.
DeMarco came in to the fight on a 5-fight win streak with a 67% KO rate, and was fighting after a gap of 2 months and 9 days. Broner was on a 24-fight win streak with a 83% KO rate, and fighting after a layoff of 3 months and 27 days.
Adrien Broner stopped the champion via TKO in the 8th round of the 12-round world-title fight, and is crowned the new WBC lightweight champion. Broner improves his record to 25-0 (21 KOs), while DeMarco adds a loss to his record at 28-3-1.
On February 6, 2010, a 24-year-old Antonio DeMarco (23-1-1, 17 KOs) got a shot at the lightweight WBC title held by 28-year-old Venezuelan boxer Edwin Valero (26-0, 26 KOs).
DeMarco came in to the fight on a 12-fight win streak with a 68% KO rate, and was fighting after a gap of 3 months and 6 days. Valero was on a 26-fight win streak with a 100% KO rate, and fighting after a layoff of 1 month and 18 days.
The challenger refused to continue the fight in the 9th round, and Edwin Valero is crowned the new lightweight world champion. Valero improves his record to 27-0 (27 KOs), while DeMarco adds a loss to his record at 23-2-1.
On February 4, 2006, a 20-year-old Antonio DeMarco (8-0, 7 KOs) and Anthony Vasquez met in the ring.
DeMarco came in to the fight on a 8-fight win streak with a 87% KO rate, and was fighting after a gap of 22 days.
Antonio DeMarco lost to Anthony Vasquez via majority decision in the 6-round fight, and adds an loss to his record at 8-1.