Premise: Floyd Mayweather Jr. . 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 ( twice at welterweight ) . In 2016 , Mayweather was ranked by ESPN as the greatest boxer , pound for pound , of the last 25 years . Many sporting news and boxing websites ranked Mayweather as the best boxer in the world , pound for pound , twice in a span of ten years ; including The Ring , Sports Illustrated , ESPN , BoxRec , Fox Sports , and Yahoo! Sports .
Hypothesis: Floyd Mayweather Jr. is considered to be the best boxer by many sporting news sources in the world.
Label: ENTAILMENT