Custio Clayton (born October 5, 1987) is a Canadian professional boxer who has held the WBA-NABA welterweight title since 2019. As an amateur he is a six-time Canadian national champion and represented Canada at 2 commonwealth games and the 2012 Olympics, where he reached the quarter-finals. He began boxing at the age of 9 with his uncle Gary Johnson.
Clayton began training at his great-uncle's gym, City of Lakes Boxing Club in Dartmouth, Nova Scotia, and fought his first amateur bout at the age of 11. He took a break from boxing for two years at the age of 17 to finish high school. The 24-year-old Nova Scotian Olympian Clayton, along with Simon Kean, were the only two Canadian male boxers to qualify for the 2012 Olympics.
Clayton was a quarter-finalist and 5th-place finisher at welterweight at the 2012 American Boxing Olympic Qualification Tournament. Five spots were available for qualification at welterweight and Custio qualified over the other quarter-finalists since his loss was to the eventual winner Myke Carvalho. Qualification being dependent on how the winning opponents performed in later rounds was controversial and will not be used in future Olympics. At the 2012 Summer Olympics (results) Clayton became the first Canadian to win a boxing bout in 8 years when he beat ÃÂscar Molina in the opening round. Then he beat the Australian Cameron Hammond, before losing to Fred Evans in the quarterfinal.
Clayton officially joined the Groupe Yvon Michel (GYM) in November 2014. The Nova Scotia boxer has indeed accepted a contract with a maximum duration of three years, the latest of which is an option. His first professional fight took place on December 19, 2014, at division light middleweight in gala undercard featuring Adonis Stevenson in Quebec City.
On 28 January 2020, Clayton scored an eighth-round knockout of Diego (El Chacarero) Ramirez and retain his WBA title.
On October 24, 2020, Clayton fought former world champion Sergey Lipinets for the interim IBF world title, where the fight ended in a draw.
May 14, 2022, Clayton recorded his first loss against Jaron (boots) Ennis in an eliminator fight.