On September 28, 2018, a 28-year-old Callum Smith (24-0, 17 KOs) got a shot at the WBA (Super) super-middleweight title held by 30-year-old fellow British boxer George Groves (28-3, 20 KOs) and the vacant The Ring title.
Smith came in to the fight on a 24-fight win streak with a 70% KO rate, and was fighting after a gap of 7 months and 4 days. Groves was on a 7-fight win streak with a 64% KO rate, and fighting after a layoff of 7 months and 11 days.
Callum Smith stopped the champion via KO in the 7th round of the 12-round world-title fight, winning the first world titles of his career, and is crowned the new WBA (Super) and The Ring super-middleweight champion. Smith improves his record to 25-0 (18 KOs), while Groves adds a loss to his record at 28-4.
On June 1, 2019, the 29-year-old WBA (Super) and The Ring super-middleweight world champion, Callum Smith (25-0, 18 KOs), faced a 35-year-old Cameroonian boxer Hassan N'Dam N'Jikam (37-3, 21 KOs), in a title defense fight.
Smith came in to the fight on a 25-fight win streak with a 72% KO rate, and was fighting after a gap of 8 months and 4 days. N'Jikam was on a 1-fight win streak with a 52% KO rate, and fighting after a layoff of 5 months and 10 days.
Callum Smith made easy work of Hassan N'Dam N'Jikam, stopping the challenger via TKO in the 3rd. Smith improves his record to 26-0 (19 KOs), while N'Jikam adds a loss to his record at 37-4.
On September 25, 2021, a 31-year-old Callum Smith (27-1, 19 KOs) and a 33-year-old Dominican boxer Lenin Castillo (21-3-1, 16 KOs) met in the ring in a light-heavyweight bout.
Smith came in to the fight on a 1-fight losing streak with a 67% KO rate, and was fighting after a gap of 9 months and 6 days. Castillo was on a 1-fight win streak with a 64% KO rate, and fighting after a layoff of 2 months and 4 days.
Callum Smith stopped Lenin Castillo via KO in the 2nd round. Smith improves his record to 28-1 (20 KOs), while Castillo adds a loss to his record at 21-4-1.
On November 23, 2019, the 29-year-old WBA (Super) and The Ring super-middleweight world champion, Callum Smith (26-0, 19 KOs), faced a 31-year-old fellow British boxer John Ryder (28-4, 16 KOs), in a title defense fight.
Smith came in to the fight on a 26-fight win streak with a 73% KO rate, and was fighting after a gap of 5 months and 22 days. Ryder was on a 4-fight win streak with a 50% KO rate, and fighting after a layoff of 6 months and 19 days.
Callum Smith defeated John Ryder via unanimous decision and successfully defended his WBA (Super) and The Ring super-middleweight titles. Smith improves his record to 27-0, while Ryder adds a loss to his record at 28-5.
On November 7, 2015, a 25-year-old Callum Smith (17-0, 12 KOs) and a 28-year-old fellow British boxer Rocky Fielding (21-0, 12 KOs) met in the ring in a super-middleweight bout.
Smith came in to the fight on a 17-fight win streak with a 70% KO rate, and was fighting after a gap of 4 months and 12 days. Fielding was on a 21-fight win streak with a 57% KO rate, and fighting after a layoff of 4 months and 12 days.
Callum Smith stopped Rocky Fielding via TKO in the 1st round. Smith improves his record to 18-0 (13 KOs), while Fielding adds a loss to his record at 21-1.
On April 2, 2016, a 25-year-old Callum Smith (18-0, 13 KOs) and Hadillah Mohoumadi met in the ring in a super-middleweight bout.
Smith came in to the fight on a 18-fight win streak with a 72% KO rate, and was fighting after a gap of 4 months and 26 days.
Callum Smith stopped Hadillah Mohoumadi via TKO in the 1st round. Smith improves his record to 19-0 (14 KOs)
On September 21, 2013, a 23-year-old Callum Smith (7-0, 5 KOs) and Patrick Mendy met in the ring in a super-middleweight bout.
Smith came in to the fight on a 7-fight win streak with a 71% KO rate, and was fighting after a gap of 14 days.
Callum Smith stopped Patrick Mendy via TKO in the 1st round. Smith improves his record to 8-0 (6 KOs)
On December 19, 2020, the 30-year-old WBA (Super) and The Ring super-middleweight world champion, Callum Smith (27-0, 19 KOs), faced a 30-year-old Mexican boxer Canelo Álvarez (53-1-2, 36 KOs), in a title defense fight.
Smith came in to the fight on a 27-fight win streak with a 70% KO rate, and was fighting after a gap of 1 year and 26 days. Canelo was on a 4-fight win streak with a 64% KO rate, and fighting after a layoff of 1 year, 1 month, and 17 days.
Canelo Álvarez defeated Callum Smith via unanimous decision and wins the WBA (Super), The Ring, and WBC titles. Canelo improves his record to 54-1-2, while Smith adds a loss to his record at 27-1.
On October 26, 2013, a 23-year-old Callum Smith (8-0, 6 KOs) and Ruben Eduardo Acosta met in the ring in a super-middleweight bout.
Smith came in to the fight on a 8-fight win streak with a 75% KO rate, and was fighting after a gap of 1 month and 5 days.
Callum Smith stopped Ruben Eduardo Acosta via KO in the 6th round. Smith improves his record to 9-0 (7 KOs)
On August 20, 2022, a 32-year-old Callum Smith (28-1, 20 KOs) and a 33-year-old French boxer Mathieu Bauderlique (21-1, 12 KOs) met in the ring in a light-heavyweight bout.
Smith came in to the fight on a 1-fight win streak with a 69% KO rate, and was fighting after a gap of 10 months and 26 days. Bauderlique was on a 9-fight win streak with a 54% KO rate, and fighting after a layoff of 11 months and 10 days.
Callum Smith stopped Mathieu Bauderlique via KO in the 4th round. Smith improves his record to 29-1 (21 KOs), while Bauderlique adds a loss to his record at 21-2.