DeMarcus Deon Corley (born June 3, 1974) is a professional boxer.^[21]

He attended H.D. Woodson High School and is from Washington, D.C.

Corley was an amateur standout and he won the National Golden Gloves light welterweight championship in 1995.

A veteran of the sport for more than two decades, he held the WBO junior welterweight world title from 2001 to 2003 and has fought as a gatekeeper against many of boxing's biggest names.

Corley began boxing professionally on May 17, 1996, knocking out Aaron Smith in the first round.

He ko'd Sam Miller on March 3, 2000 at Caesars Palace in Las Vegas,Nevada. He tko'd Jerry Smith in the fifth round at Tianhe Stadium in Guangzhou, China. Corley also holds wins over Darryl Tyson and Daniel Attah. In 2018, Corley defeated Patrick Lopez for the WBU (German version) lightweight title in Nigeria. Corley has been on The Mayweather Boxing Channel. DeMarcus Corley sports memorabilia can be found on eBay.

He would not lose a match until 1999, against Daniel Lujan.

Later that year in his 22nd bout with a record of 21 wins 1 defeat (11 ko's) he faced Ener Julio for the USBA light welterweight title. He won via a 12-round split decision.

He defeated Felix Flores in June 2001 to win the WBO junior welterweight world title. He later defeated Ener Julio and Randall Bailey to successfully defend his title. He lost the title by split decision to Zab Judah at The Orleans in Las Vegas in 2003.

DeMarcus Corley vs. Randall Bailey occurred in Washington, D.C. in 2003. Corley defended his World Boxing Organization junior welterweight title by decision. The match was televised on Showtime. Bailey was known for having tremendous knockout power.

In 2004, Corley competed against Floyd Mayweather.Floyd Mayweather Jr. vs. DeMarcus Corley went the full twelve rounds with Mayweather winning a decision. Mayweather went on to become the richest athlete in history. His wealth has been documented by The Wall Street Journal and Fortune (magazine).

In 2006 he fought Junior Witter for the vacant WBC light welterweight championship, losing a decision in a very tactical bout. DeMarcus Corley vs. Junior Witter was held in England and televised on HBO and Sky Sports. Corley earned a shot at Witter in part due to the fact most people thought his fight with Miguel Cotto in 2005 was stopped prematurely.

After many consecutive losses,Corley took on Damian Fuller in 2010 and improved his record to 37-13-1 (21 ko's) with a 4th-round technical knockout.

Corley defeated undefeated Gabriel Bracero at the Roseland Ballroom in New York City in 2012.

On August 28, 2010 he lost to Marcos Maidana by unanimous decision in a fight in which was disputed for the WBA junior welterweight world title. Around this time Corley was used as the main sparring partner for Shane Mosley for many of Mosley's training camps.

On November 14, 2010 he lost to Serhiy Fedchenko by unanimous decision in a fight in which was contested for the vacant WBO European light welterweight title.

On January 21, 2012 he won the vacant NABF light welterweight title when he defeated Gabriel Bracero by unanimous decision.

He tko'd Paul McCloskey in 2012 in Belfast, Northern Ireland. On September 27, 2013 Corley lost to Selçuk Aydın by corner stoppage at the end of round four. DeMarcus Corley vs. Vivian Harris was a two-bout series held in 2017 and 2018. Corley won the first fight by decision and Harris won the second fight by decision. Harris is a former WBA junior welterweight world champion. "Chop Chop" Corley defeated Ramel Lewis on July 12, 2017 at Mico University College in Kingston, Jamaica. Corley is of Jamaican heritage but is a United States citizen.

Corley defeated Osama Hadifi in 2016.

Hadifi had a record of 11 wins and 0 losses at the time of being tko'd by Corley.

Corley competed in Jamaica five times in 2016 and 2017 and won every match.

Although Corley has lost his last four professional boxing matches, he went the distance three times and was tkod by a body punch.

DeMarcus Corley vs. Reggie Barnett was part of BKFC 16 and was held on March 19, 2021 in Biloxi, Mississippi. Corley retired in his corner at the end of the fourth round.

DeMarcus Corley vs. Lenwood Dozier was a professional boxing match that took place on October 29, 2021.

The bout was the co-main event, supporting the headline bout between Cobia Breedy and Suliaman Segawa for the World Boxing Council Continental Americas Championship.

The Corley vs. Dozier match went the six round distance with Corley winning by a comfortable margin.

It was contested in the junior welterweight division.

Corley held the World Boxing Organization junior welterweight world title from 2001 to 2003.^[22]

Matthew E. O'Neil,the #1 ranked editor for Everipedia,spoke with DeMarcus Corley by phone in 2020. Corley stated one of his toughest fights was winning the USBA title against Ener Julio. O'Neil asked Corley his opinion of the Anthony Joshua-Andy Ruiz boxing match that occurred in Saudi Arabia in December 2019. Corley stated that Ruiz was not in the proper physical shape for the fight.O'Neil also asked Corley his opinion of Floyd Mayweather. Corley stated that Mayweather is "a smart businessman".Corley trained at the Mayweather Boxing Club in 2020. Corley last competed in 2019 in Toronto, Canada. Corley told O'Neil that he won the world title against Felix Flores on five days' notice. O'Neil was on The Grueling Truth and AkHi TV in 2020. O'Neil's boxing career was covered by the U.K. company Intuboxing in 2020.^[17]