On June 20, 2015, 26-year-old David Lemieux (33-2, 31 KOs) and 31-year-old Hassan N'Dam N'Jikam (31-1, 18 KOs) fought for the vacant IBF middleweight title.
Lemieux came in to the fight on a 8-fight win streak with a 88% KO rate, and was fighting after a gap of 6 months and 14 days. N'Jikam was on a 4-fight win streak with a 56% KO rate, and fighting after a layoff of 8 months and 19 days.
David Lemieux defeated Hassan N'Dam N'Jikam via unanimous decision . Lemieux improves his record to 34-2, while N'Jikam adds a loss to his record at 31-2.
On March 11, 2017, a 28-year-old David Lemieux (36-3, 32 KOs) and a 32-year-old American boxer Curtis Stevens (29-5, 21 KOs) met in the ring in a middleweight bout.
Lemieux came in to the fight on a 2-fight win streak with a 82% KO rate, and was fighting after a gap of 4 months and 17 days. Stevens was on a 2-fight win streak with a 61% KO rate, and fighting after a layoff of 3 months and 20 days.
David Lemieux stopped Curtis Stevens via KO in the 3rd round. Lemieux improves his record to 37-3 (33 KOs), while Stevens adds a loss to his record at 29-6.
On October 29, 2010, a 21-year-old David Lemieux (23-0, 22 KOs) and Héctor Camacho Jr. met in the ring in a middleweight bout.
Lemieux came in to the fight on a 23-fight win streak with a 95% KO rate, and was fighting after a gap of 4 months and 18 days.
David Lemieux stopped Héctor Camacho Jr. via KO in the 1st round. Lemieux improves his record to 24-0 (23 KOs)
On May 24, 2014, a 25-year-old David Lemieux (31-2, 29 KOs) and Fernando Guerrero met in the ring in a middleweight bout.
Lemieux came in to the fight on a 6-fight win streak with a 87% KO rate, and was fighting after a gap of 5 months and 24 days.
David Lemieux stopped Fernando Guerrero via KO in the 3rd round. Lemieux improves his record to 32-2 (30 KOs)
On April 3, 2010, a 21-year-old David Lemieux (21-0, 20 KOs) and Walid Smichet met in the ring in a super-middleweight bout.
Lemieux came in to the fight on a 21-fight win streak with a 95% KO rate, and was fighting after a gap of 1 month and 28 days.
David Lemieux stopped Walid Smichet via KO in the 2nd round. Lemieux improves his record to 22-0 (21 KOs)
On September 15, 2018, a 29-year-old David Lemieux (39-4, 33 KOs) and a 34-year-old Irish boxer Gary O'Sullivan (28-2, 20 KOs) met in the ring.
Lemieux came in to the fight on a 1-fight win streak with a 76% KO rate, and was fighting after a gap of 3 months and 20 days. O'Sullivan was on a 6-fight win streak with a 66% KO rate, and fighting after a layoff of 4 months and 11 days.
David Lemieux stopped Gary O'Sullivan via KO in the 1st round. Lemieux improves his record to 40-4 (34 KOs), while O'Sullivan adds a loss to his record at 28-3.
On June 11, 2010, a 21-year-old David Lemieux (22-0, 21 KOs) and a 29-year-old American boxer Elvin Ayala (20-4-1, 9 KOs) met in the ring in a middleweight bout.
Lemieux came in to the fight on a 22-fight win streak with a 95% KO rate, and was fighting after a gap of 2 months and 8 days. Ayala was on a -1-fight win streak with a 36% KO rate, and fighting after a layoff of 7 months and 25 days.
David Lemieux stopped Elvin Ayala via KO in the 1st round. Lemieux improves his record to 23-0 (22 KOs), while Ayala adds a loss to his record at 20-5-1.
On October 12, 2012, a 23-year-old David Lemieux (26-2, 25 KOs) and Álvaro Gaona met in the ring.
Lemieux came in to the fight on a 1-fight win streak with a 89% KO rate, and was fighting after a gap of 4 months and 4 days.
David Lemieux stopped Álvaro Gaona via KO in the 1st round. Lemieux improves his record to 27-2 (26 KOs)
On October 3, 2009, a 20-year-old David Lemieux (17-0, 17 KOs) and Donny McCrary met in the ring.
Lemieux came in to the fight on a 17-fight win streak with a 100% KO rate, and was fighting after a gap of 1 month and 5 days.
David Lemieux stopped Donny McCrary via KO in the 1st round. Lemieux improves his record to 18-0 (18 KOs)
On December 16, 2017, a 28-year-old David Lemieux (38-3, 33 KOs) got a shot at the middleweight WBO title held by 28-year-old British boxer Billy Joe Saunders (25-0, 12 KOs).
Lemieux came in to the fight on a 4-fight win streak with a 80% KO rate, and was fighting after a gap of 7 months and 10 days. Saunders was on a 25-fight win streak with a 48% KO rate, and fighting after a layoff of 3 months.
Billy Joe Saunders defeated David Lemieux via unanimous decision and successfully defended his WBO middleweight title. Saunders improves his record to 26-0, while Lemieux adds a loss to his record at 38-4.