Sampson Lewkowicz (born January 10, 1951, in Montevideo) is an Uruguayan-American boxing promoter and manager, whose notable clients have included Sergio Martinez, Magomed Abdusalamov, Javier Fortuna, and Gabriel Campillo. [1] Lewkowicz is also credited for having discovered Manny Pacquiao [2] prior to the Filipino fighter's arrival in the United States, and served as matchmaker for Sultan Ibragimov. [3]
Lewkowicz is the president of Sampson Boxing, a promotional and advising company for boxers. Lewkowicz has gained notable recognition for his role as chief adviser to multi-division world champion Sergio Martinez. [4] [5] [6]
Lewkowicz was also involved in helping create a trust for boxer Magomed Abdusalamov after the boxer collapsed following his fight with Mike Perez. [7]
Lewkowicz is also the promoter of two-time super middleweight titlist, David Benavidez,
Lewkowicz also manages unified Junior Middleweight world champion, Jeison Rosario. Rosario knocked out Julian Williams in 2019 to win the championship.
The World Boxing Council (WBC) is an international professional boxing organization. It is among the four major organizations which sanction professional boxing bouts, alongside the World Boxing Association (WBA), International Boxing Federation (IBF) and World Boxing Organization (WBO).
Miguel Ángel Cotto Vázquez is a Puerto Rican former professional boxer who competed from 2001 to 2017. He is a multiple-time world champion, and the first Puerto Rican boxer to win world titles in four weight classes, from light welterweight to middleweight. In 2007 and 2009, he reached a peak active pound for pound ranking of seventh by The Ring magazine. Cotto started out his career as a hard-hitting pressure fighter, but evolved over the years into a more refined boxer-puncher as he moved up in weight.
Antonio Margarito Montiel is a Mexican-American former professional boxer who competed between 1994 and 2017. He held multiple welterweight world championships, including the WBO title from 2002 to 2007, the IBF title in 2008, and the WBA (Super) title from 2008 to 2009. He also challenged three times for a light middleweight world title between 2004 and 2011. Nicknamed El Tornado de Tijuana, Margarito was known for his aggressive pressure fighting style and exceptionally durable chin.
Andre Michael Ward is an American former professional boxer who competed from 2004 to 2017. He retired with an undefeated record and held multiple world championships in two weight classes, including unified super middleweight titles between 2009 and 2015, and unified light heavyweight titles between 2016 and 2017.
Julio César Chávez Carrasco, best known as Julio César Chávez Jr., is a Mexican professional boxer who held the WBC middleweight title from 2011 to 2012. He is the son of former three-division world champion of boxing, Julio César Chávez, and older brother of Omar Chávez.
Gennadiy Gennadyevich Golovkin, often known by his nickname "GGG" or "Triple G", is a Kazakhstani professional boxer. He has held multiple middleweight world championships, and is a two-time former unified champion. He held the World Boxing Association (WBA), World Boxing Council (WBC) and International Boxing Federation (IBF) titles at varying points between 2014 and 2023, and challenged once for the undisputed super middleweight championship in 2022. He is also a former International Boxing Organization (IBO) middleweight champion, having held the title twice between 2011 and 2023.
Paul Williams is an American former professional boxer who competed from 2000 to 2012. He held the WBO welterweight title twice between 2007 and 2008, the WBO interim junior middleweight title in 2008, and challenged once for the unified middleweight title in 2010. Nicknamed "The Punisher", and standing at a height of 6 feet 2 inches, Williams was unusually tall for the three divisions in which he competed. His career was cut short in 2012 after a motorcycle accident left him paralyzed from the waist down.
Avetik Abrahamyan, best known as Arthur Abraham, is an Armenian-German former professional boxer who competed from 2003 to 2018. He held multiple world championships in two weight classes, including the IBF middleweight title from 2005 to 2009, and the WBO super-middleweight title twice between 2012 and 2016.
Serhiy Oleksandrovych Dzinziruk is a Ukrainian professional boxer and a former WBO super welterweight champion.
Demetrius Cesar Andrade is an American professional boxer. He has held multiple world championships in two weight classes, at light middleweight and middleweight. As an amateur, he won the U.S. national championships and Golden Gloves twice each, a gold medal at the 2007 World Championships, and represented the U.S. at the 2008 Olympics; all in the welterweight division.
Ismaikel "Mike" Perez is a Cuban and Irish professional boxer who holds the WBA Intercontinental Cruiserweight title and challenged once for the WBC cruiserweight title in 2017.
Sergio Gabriel Martínez is an Argentine professional boxer. He has held world championships in two weight classes, including the WBC super welterweight title from 2009 to 2010; and the unified WBC, WBO, Ring magazine and lineal middleweight titles between 2010 and 2014. With six successful defenses of The Ring and lineal middleweight titles, Martínez's 50-month reign as champion ranks as one of the longest in the history of that weight class.
Billy Joe Saunders is a British professional boxer. He is the first fighter from the Travelling community to win world championships in two weight classes, including the WBO middleweight title from 2015 to 2018 and the WBO super-middleweight title from 2019 to 2021. At regional level, he held the European, British, and Commonwealth middleweight titles between 2012 and 2015. Saunders represented Great Britain at the 2008 Olympics as an amateur, reaching the second round of the welterweight bracket. In the same year, he won gold at the EU Championships.
James Frederick DeGale is a British former professional boxer who competed from 2009 to 2019. He held the IBF super-middleweight title twice between 2015 and 2018, and regionally the European and British super-middleweight titles between 2010 and 2012.
Magomed Abdusalamov is a Russian former professional boxer who competed from 2008 to 2013. As an amateur he won the 2005 and 2006 Russian national championships in the super-heavyweight division. He turned professional in 2008, fighting nineteen times at heavyweight and winning his first eighteen by knockout. In 2013, Abdusalamov was forced to retire from the sport due to severe brain injuries sustained during his only career defeat.
Santos Saúl Álvarez Barragán, commonly known as Canelo, is a Mexican professional boxer. He has held multiple world championships in four weight classes from light middleweight to light heavyweight, including unified titles in three of those weight classes and lineal titles in two. Álvarez is the first and only boxer in history to become undisputed champion at super middleweight, having held the World Boxing Association (WBA), World Boxing Council (WBC) and Ring magazine titles since 2020, and the International Boxing Federation (IBF) and World Boxing Organization (WBO) titles since 2021.
Gilberto Ramírez Sánchez is a Mexican professional boxer who has held the World Boxing Association (WBA) (Super) cruiserweight title since March 2024. He previously held the WBO super middleweight title from 2016 to 2019, and is the first boxer from Mexico to win a major world title in those weight classes. As of April 2024, Ramírez is ranked as the world's best active cruiserweight by BoxRec, sixth by The Ring magazine, and seventh by the Transnational Boxing Rankings Board.
Sergio Martínez vs. Darren Barker, billed as No Fear. No Mercy., was a professional boxing match contested on October 1, 2011 for The Ring middleweight championship.
Liam Mark Smith is a British professional boxer. He held the World Boxing Organization (WBO) light-middleweight title from 2015 to 2016. At regional level, he has held multiple light-middleweight championships, including the British and Commonwealth titles between 2012 and 2015. Smith is the younger brother of Paul Smith and Stephen Smith, and the older brother of Callum Smith; all of whom are professional boxers.
Anthony David Benavidez is an American professional boxer. He has held the World Boxing Council (WBC) interim light heavyweight title since June 2024, having previously held the WBC super middleweight title twice between 2017 and 2020. Claiming his first title at 20 years, eight months, three weeks and one day old, Benavidez holds the record as the youngest super middleweight title holder in history. He is ranked second by The Ring magazine, second by the Transnational Boxing Rankings Board, and fourth by BoxRec.