Claim: There are 26 world title wins and 0 loss record under Floyd Mayweather Jr.
Evidence: Widely considered to be one of the greatest boxers of all time , undefeated as a professional , and a five-division world champion , Mayweather won fifteen world titles and the lineal championship in four different weight classes -LRB- twice at welterweight -RRB-.
He finished his career with a record of 26 wins without a loss or draw in world title fights -LRB- 10 by KO -RRB- ; 23 wins -LRB- 9 KOs -RRB- in lineal title fights ; 24 wins -LRB- 7 KOs -RRB- against former or current world titlists ; 12 wins -LRB- 3 KOs -RRB- against former or current lineal champions ; and 2 wins -LRB- 1 KO -RRB- against International Boxing Hall of Fame inductees.
Champions recognized by sanctioning bodies such as the World Boxing Association -LRB- WBA -RRB- or World Boxing Council -LRB- WBC -RRB- , or the Ultimate Fighting Championship -LRB- UFC -RRB- may vacate their title voluntarily , or be stripped of the title for breaching the sanctioning body 's regulations or contracts.