On December 14, 2013, a 30-year-old Marcos Maidana (34-3, 31 KOs) got a shot at the WBA welterweight title held by 24-year-old American boxer Adrien Broner (27-0, 22 KOs).
Maidana came in to the fight on a 3-fight win streak with a 83% KO rate, and was fighting after a gap of 6 months and 6 days. Broner was on a 27-fight win streak with a 81% KO rate, and fighting after a layoff of 5 months and 22 days.
Marcos Maidana defeated Adrien Broner via unanimous decision and wins the WBA title. Maidana improves his record to 35-3, while Broner adds a loss to his record at 27-1.
On September 23, 2011, the 28-year-old WBA (Regular) super-lightweight world champion, Marcos Maidana (30-2, 27 KOs), faced a 28-year-old Russian boxer Petr Petrov (29-2-2, 13 KOs), in a title defense fight.
Maidana came in to the fight on a 1-fight win streak with a 84% KO rate, and was fighting after a gap of 5 months and 14 days. Petrov was on a 13-fight win streak with a 39% KO rate, and fighting after a layoff of 2 months and 15 days.
Marcos Maidana stopped Petr Petrov via KO in the 4th round of the 12-round world-title fight, and successfully defended his WBA (Regular) super-lightweight title. Maidana improves his record to 31-2 (28 KOs), while Petrov adds a loss to his record at 29-3-2.
On June 27, 2009, a 25-year-old Marcos Maidana (25-1, 24 KOs) and a 22-year-old American boxer Victor Ortiz (24-1-1, 19 KOs) met in the ring in a super-lightweight bout.
Maidana came in to the fight on a 1-fight losing streak with a 92% KO rate, and was fighting after a gap of 4 months and 20 days. Ortiz was on a 8-fight win streak with a 73% KO rate, and fighting after a layoff of 3 months and 20 days.
Marcos Maidana stopped Victor Ortiz via TKO in the 6th round. Maidana improves his record to 26-1 (25 KOs), while Ortiz adds a loss to his record at 24-2-1.
On March 27, 2010, a 26-year-old Marcos Maidana (27-1, 26 KOs) and Victor Cayo met in the ring in a super-lightweight bout.
Maidana came in to the fight on a 2-fight win streak with a 92% KO rate, and was fighting after a gap of 4 months and 6 days.
Marcos Maidana stopped Victor Cayo via KO in the 6th round. Maidana improves his record to 28-1 (27 KOs)
On November 21, 2009, a 26-year-old Marcos Maidana (26-1, 25 KOs) and William Gonzalez met in the ring in a super-lightweight bout.
Maidana came in to the fight on a 1-fight win streak with a 92% KO rate, and was fighting after a gap of 4 months and 25 days.
Marcos Maidana stopped William Gonzalez via KO in the 3rd round. Maidana improves his record to 27-1 (26 KOs)
On September 13, 2014, Marcos Maidana and Floyd Mayweather Jr. met again in an immediate rematch.
Maidana came in to the fight on a 1-fight losing streak with a 79% KO rate, and was fighting after a gap of 4 months and 10 days. Mayweather Jr. was on a 46-fight win streak with a 56% KO rate, and fighting after a layoff of 4 months and 10 days.
Floyd Mayweather Jr. defeated Marcos Maidana via unanimous decision in the rematch and successfully defended his WBA (Super), WBC, and The Ring welterweight titles. Mayweather Jr. improves his record to 47-0, while Maidana adds a loss to his record at 35-5.
On April 9, 2011, a 27-year-old Marcos Maidana (29-2, 27 KOs) and a 34-year-old Mexican boxer Érik Morales (51-6, 35 KOs) met in the ring in a super-lightweight bout.
Maidana came in to the fight on a 1-fight losing streak with a 87% KO rate, and was fighting after a gap of 3 months and 29 days. Morales was on a 3-fight win streak with a 61% KO rate, and fighting after a layoff of 3 months and 22 days.
Marcos Maidana defeated Érik Morales via majority decision in the 12-round super-lightweight fight. Maidana improves his record to 30-2, while Morales adds a loss to his record at 51-7.
On August 28, 2010, a 27-year-old Marcos Maidana (28-1, 27 KOs) and a 36-year-old American boxer DeMarcus Corley (37-13-1, 22 KOs) met in the ring in a super-lightweight bout.
Maidana came in to the fight on a 3-fight win streak with a 93% KO rate, and was fighting after a gap of 5 months and 1 day. Corley was on a 1-fight win streak with a 43% KO rate, and fighting after a layoff of 1 month and 18 days.
Marcos Maidana defeated DeMarcus Corley via unanimous decision in the 12-round super-lightweight fight. Maidana improves his record to 29-1, while Corley adds a loss to his record at 37-14-1.
On May 3, 2014, the 30-year-old WBA welterweight champion, Marcos Maidana (35-3, 31 KOs), and the 37-year-old WBC and The Ring welterweight champion Floyd Mayweather Jr. (45-0, 26 KOs) met in a title-unification fight.
Maidana came in to the fight on a 4-fight win streak with a 81% KO rate, and was fighting after a gap of 4 months and 19 days. Mayweather Jr. was on a 45-fight win streak with a 57% KO rate, and fighting after a layoff of 7 months and 19 days.
Floyd Mayweather Jr. defeated Marcos Maidana via majority decision and unifies the WBA, WBC, and The Ring welterweight titles. Mayweather Jr. improves his record to 46-0, while Maidana adds a loss to his record at 35-4.
On September 15, 2012, a 29-year-old Marcos Maidana (31-3, 28 KOs) and Jesús Soto Karass met in the ring in a welterweight bout.
Maidana came in to the fight on a 1-fight losing streak with a 82% KO rate, and was fighting after a gap of 6 months and 21 days.
Marcos Maidana stopped Jesús Soto Karass via TKO in the 8th round. Maidana improves his record to 32-3 (29 KOs)