American professional boxer Zab Judah has an estimated net worth of $5 million that he earned as a former Undisputed World Welterweight Champion and former WBO and IBF Junior Welterweight champion. He has won five world titles between the light welterweight and welterweight divisions. Born Zabdiel Judah on October 27, 1977 in Brooklyn, New York, he began boxing at the age of six. He compiled an amateur record of 110-5. He was a two-time US national champion and three-time New York Golden Gloves Champion. He also won the 1996 PAL National Championship. He attempted to earn a spot on the 1996 US Olympic boxing team but was prevented from qualifying due to his loss against David Diaz despite defeating Ishe Smith and Hector Camacho Jr.

On September 20, 1996, Judah made his professional debut at the age of 18 in Miami, Florida. He defeated Michael Johnson by technical knockout in the second round.  He won the IBF Junior Welterweight title on February 12, 2000 when he defeated Jan Piet Bergman by knockout in the fourth round. He defended his IBF titles five times before he lost to Kostya Tszyu on November 3, 2001 by TKO in the second round. On July 12, 2003, he defeated DeMarcus Corley by split decision to win the WBO Junior Welterweight title. He defended his WBO title once before he moved up to the welterweight division.

Zab Judah was defeated by Cory Spinks on April 10, 2004 by unanimous decision. After ten months, he defeated Spinks in the ninth round by TKO. He also defeated Cosme Rivera by third round TKO. On January 7, 2006, he lost to Carlos Baldomir by unanimous decision. He lost to Floyd Mayweather Jr. by unanimous decision on April 8, 2006. He lost in an eleventh round TKO to Miguel Cotto on June 9, 2007 for the WBA Welterweight title. He also lost to Joshua Clottey by technical decision on August 2, 2008 in a fight for the vacant IBF Welterweight title. On November 6, 2009, he took on Ubaldo Hernandez and won the fight by TKO in the second round. He won a split decision against Lucas Matthysse on November 6, 2010.

Judah defeated Kaizer Mabuza on March 5, 2011 by a seventh round TKO to regain the IBF Light Welterweight title. He fought WBA champion Amir Khan on July 23, 2011 but was knocked out in the fifth round. He holds a record of 40 wins with 27 knockouts and eight losses.