On November 15, 2014, a 32-year-old Matthew Macklin (31-5, 20 KOs) and a 27-year-old Argentinian boxer Jorge Sebastian Heiland (24-4-2, 12 KOs) met in the ring in a middleweight bout.
Macklin came in to the fight on a 2-fight win streak with a 55% KO rate, and was fighting after a gap of 1 month and 19 days. Heiland was on a 3-fight win streak with a 40% KO rate, and fighting after a layoff of 1 month and 27 days.
Jorge Sebastian Heiland stopped Matthew Macklin via KO in the 10th round. Heiland improves his record to 25-4-2 (13 KOs), while Macklin adds a loss to his record at 31-6.
On June 29, 2013, a 31-year-old Matthew Macklin (29-4, 20 KOs) got a shot at the middleweight WBA title held by 31-year-old Kazakhstani boxer Gennady Golovkin (26-0, 23 KOs).
Macklin came in to the fight on a 1-fight win streak with a 60% KO rate, and was fighting after a gap of 9 months and 14 days. Golovkin was on a 26-fight win streak with a 88% KO rate, and fighting after a layoff of 2 months and 30 days.
Gennady Golovkin made easy work of Matthew Macklin, stopping the challenger via KO in the 3rd. Golovkin improves his record to 27-0 (24 KOs), while Macklin adds a loss to his record at 29-5.
On March 17, 2012, a 29-year-old Matthew Macklin (28-3, 19 KOs) got a shot at the middleweight The Ring title held by 37-year-old Argentinian boxer Sergio Martínez (48-2-2, 27 KOs).
Macklin came in to the fight on a 1-fight losing streak with a 61% KO rate, and was fighting after a gap of 8 months and 21 days. Martínez was on a 4-fight win streak with a 51% KO rate, and fighting after a layoff of 5 months and 16 days.
The challenger refused to continue the fight in the 11th round, and Sergio Martínez is crowned the new middleweight world champion. Martínez improves his record to 49-2-2 (28 KOs), while Macklin adds a loss to his record at 28-4.
On June 25, 2011, a 29-year-old Matthew Macklin (28-2, 19 KOs) got a shot at the middleweight WBA title held by 32-year-old German boxer Felix Sturm (35-2-1, 15 KOs).
Macklin came in to the fight on a 11-fight win streak with a 63% KO rate, and was fighting after a gap of 6 months and 14 days. Sturm was on a 7-fight win streak with a 39% KO rate, and fighting after a layoff of 4 months and 6 days.
Felix Sturm defeated Matthew Macklin via split decision and successfully defended his WBA (Super) middleweight title. Sturm improves his record to 36-2-1, while Macklin adds a loss to his record at 28-3.
On September 29, 2006, a 24-year-old Matthew Macklin (17-1, 13 KOs) and Jamie Moore met in the ring in a super-welterweight bout.
Macklin came in to the fight on a 8-fight win streak with a 72% KO rate, and was fighting after a gap of 3 months and 28 days.
Matthew Macklin lost to Jamie Moore via KO in the 10th round, and adds an loss to his record at 17-2.
On November 6, 2003, a 21-year-old Matthew Macklin (9-0, 6 KOs) and Andrew Facey met in the ring in a super-welterweight bout.
Macklin came in to the fight on a 9-fight win streak with a 66% KO rate, and was fighting after a gap of 5 months and 13 days.
Matthew Macklin lost to Andrew Facey via points decision in the 10-round super-welterweight fight, and adds an loss to his record at 9-1.