Floyd Mayweather Jr. vs. Zab Judah, billed as Sworn Enemies, was a boxing match for the IBF welterweight title which took place on April 8, 2006 at the Thomas and Mack Center in Paradise, Nevada between IBF welterweight champion Zab Judah and undefeated three-division champion Floyd Mayweather Jr.

Zabdiel Judah is an American former professional boxer who competed from 1996 to 2019. He held multiple world championships in two weight classes, including the IBF and WBO junior welterweight titles between 2000 and 2004; the undisputed welterweight title in 2005, which included a reign as the lineal champion from 2005 to 2006; and the IBF junior welterweight title again in 2011. Judah's career ended in 2019 when he was hospitalized after suffering a brain bleed in a stoppage loss to Cletus Seldin.