Who won Simpson vs Williamson?
Troy Williamson beat Callum Simpson by technical knockout in the 10th round on Saturday, December 20th, 2025, at First Direct Arena, Leeds.
The fight was scheduled to take place over 12 rounds in the Super Middleweight division, which meant the weight limit was 168 pounds (12 stone or 76.2 kg).
Simpson vs Williamson stats
Callum Simpson stepped into the ring with an undefeated record of 18 wins, zero losses, and 0 draws.
Troy Williamson made his way to the ring with a record of 21 wins, 4 losses and 1 draw.
Callum Simpson was the younger man by 5 years, at 29 years old.
Simpson had a height advantage of 4 inches over Williamson. That also extended to a 2-inch reach advantage.
Both Callum Simpson and Troy Williamson fought out of an orthodox stance.
Simpson was the less experienced professional fighter, having had 8 fewer fights, and made his debut in 2019, 2 years and 7 months later than Williamson, whose first professional fight was in 2016. He had fought 92 fewer professional rounds, totaling 87 compared to Williamson's 179.
Callum Simpson went into the fight ranked number 7 by the WBA, 11 by the WBC, 10 by the WBO, and 5 by the IBF at super middleweight.
Simpson vs Williamson form
Simpson had won 5 of his most recent fights, stopping 4 of them, going the distance once.
In his last fight before this contest, he had won against Ivan Zucco on June 7, 2025, by technical knockout in the 10th round at Oakwell Football Ground, Barnsley, United Kingdom.
Prior to that, he had won against Elvis Ahorgah on February 1, 2025, by technical knockout in the 5th round in their CBC Commonwealth Super Middleweight championship fight at Wembley Arena, Wembley.
Going into that contest, he had beaten Steed Woodall on January 11, 2025, by technical knockout in the 2nd round in their BBBOC British Super Middleweight and CBC Commonwealth Super Middleweight championship fight at Park Community Arena, Sheffield.
Before that, he had defeated Zak Chelli on August 3, 2024, by unanimous decision in their BBBOC British Super Middleweight and CBC Commonwealth Super Middleweight championship fight at Oakwell Football Ground, Barnsley.
He had won against Abdallah Paziwapazi on March 31, 2024, by knockout in the 4th round at O2 Arena, Greenwich.
Troy Williamson had stopped 2 of his last 5 opponents.
In his last fight leading up to this contest, he had defeated Mark Dickinson on September 6, 2025, by technical knockout in the 9th round at Rainton Meadows Arena, Houghton-le-Spring, United Kingdom.
Prior to that, he had been beaten by Ishmael Davis on March 23, 2024, by unanimous decision in their 12 round contest at Sheffield Arena, Sheffield.
Going into that contest, he had lost to Caoimhin Agyarko on December 2, 2023, by split decision in their 10 round contest at The SSE Arena (Odyssey Arena), Belfast.
Before that, he had been beaten by Josh Kelly on December 2, 2022, by unanimous decision in their BBBOC British Super Welterweight championship fight at Utilita Arena, Newcastle.
He had defeated David Benitez on September 17, 2022, by technical knockout in the 6th round at Bolton Whites Hotel (De Vere Whites), Bolton.
Activity check
In terms of activity leading into the fight, Callum Simpson had been fighting more than Troy Williamson.
Going into this contest, Callum Simpson had last fought 6 months and 13 days ago, while Troy Williamson's last outing had been 3 months and 14 days ago.
Simpson's last 5 fights had come over a period of 1 year, 8 months and 19 days, which means he had been fighting approximately every 4 months and 5 days. In those fights, he fought a total of 33 rounds, meaning that they had lasted 6.6 rounds on average.
Williamson's last 5 fights had come over a period of 3 years, 3 months and 3 days, meaning he had been fighting on average every 7 months and 26 days. In those fights, he fought a total of 49 rounds, meaning that they had lasted 9.8 rounds on average.
What time did Simpson vs Williamson start?
The fighters were expected to ringwalk at around 9:15 PM GMT at First Direct Arena, Leeds, United Kingdom, which was 4:15 PM EST or 1:15 PM PST on the West Coast of America.
Who broadcast Simpson vs Williamson?
The TrillerTV+ US show began at 1:30 PM EST / 10:30 AM PST. The BBC Three broadcast of the card started at 7:30 PM (GTM).
What were the odds on Simpson vs Williamson?
Callum Simpson was a 7/50 (-710) favorite going into the contest, while Troy Williamson made his way into the ring at 9/2 (+450) with oddsmakers.
Both the Referee, and Simpsons corner should be ashamed of not stopping the fight,and saving a courageous boxer from taking too much unnecessary punishment.