Pernell Whitaker Sr. was an American professional boxer who competed from 1984 to 2001, and subsequently worked as a boxing trainer. He was a four-weight world champion, having won titles at lightweight, light welterweight, welterweight, and light middleweight; the undisputed lightweight title; and the lineal lightweight and welterweight titles. In 1989, Whitaker was named Fighter of the Year by The Ring magazine and the Boxing Writers Association of America. He currently holds the longest unified lightweight championship reign in boxing history at six title defenses. Whitaker is generally regarded as one of the greatest defensive boxers of all-time.
Lester Ellis is a British-born Australian former professional boxer. He is a five-time world champion, having also held the Australian and Commonwealth (twice) titles.
Katie Taylor is an Irish professional boxer and former footballer. She is the undisputed and lineal world lightweight champion since 2019, and the undisputed and lineal world super lightweight champion since 2023.
In combat sports where champions emerge through a challenge, the lineal championship in a weight class represents an intangible world title initially held by the victor in a pivotal bout between top contenders in the division, as commonly interpreted. Subsequently, it transitions to a fighter who defeats the reigning champion in a match within that weight class. An alternative, less mainstream perspective suggests that vacancies in divisional championships can only be filled by an undisputed champion. In professional boxing, the informal term for the lineal champion is "the man who beat the man."
Cecilia Carmen Linda Brækhus is a Norwegian professional boxer and former kickboxer. She reigned as the undisputed female welterweight boxing champion from 2014 to 2020, and is the first woman in any weight class to hold the WBA, WBC, IBF and WBO titles simultaneously. Brækhus is also one of only 11 boxers in history, female or male, to hold all four major world titles simultaneously.
Amanda Serrano is a Puerto Rican professional boxer, mixed martial artist and professional wrestler. As a boxer, she is the unified featherweight world champion, having held the WBO title since 2019, IBF titles since 2022 and the WBA title since 2023. She is the only female, and Puerto Rican, to win world titles in more than four weight classes, and holds the Guinness World Record for the most boxing world championships won in different weight-classes by a female, having held 9 major world titles across seven different weight classes.
Delfine Persoon is a Belgian professional boxer. She held the IBF female lightweight title in 2012 and the WBC female lightweight title from 2014 to June 2019, losing the title in a unification fight against Katie Taylor for the undisputed lightweight championship. As of September 2020, she is ranked as the world's best active female super-featherweight by BoxRec, the second best active female lightweight by The Ring, and the second best active female, pound for pound, by BoxRec, fifth by The Ring and seventh by ESPN.
Myriam Lamare is a French female boxer who won world titles in the World Boxing Association (WBA), World Boxing Federation (WBF), and International Boxing Federation (IBF).
Teófimo Andrés López Rivera is an American professional boxer. He has held multiple world championships in two weight classes, including the World Boxing Organization (WBO) and Ring magazine light welterweight titles since June 2023; previously he held the unified World Boxing Association (WBA), International Boxing Federation (IBF), WBO, and Ring lightweight titles between 2019 and 2021. Lopez has also held the lineal championship at lightweight and light welterweight. As an amateur, he represented Honduras at the 2016 Summer Olympics.
Marie-Ève Dicaire is a Canadian professional boxer who is a 2-time IBF female light middleweight champion from 2018 to March 2021 and from December 2021 to November 2022. In 2013, she was named athlete of the year by Boxing Quebec. As of September 2020, she is ranked as the world's second best active female light middleweight by The Ring and BoxRec.
Ivan Baranchyk is a Belarusian professional boxer who held the IBF light-welterweight title from 2018 to 2019.
Jessica McCaskill is an American professional boxer. She is a world champion in two weight classes, having held the undisputed, IBO, and Ring female welterweight titles since 2020; the WBC female super lightweight title from 2018 to 2020; and the WBA female super lightweight title from 2019 to 2020. She also challenged for the WBA lightweight title in 2017. As of September 2020, she is ranked as the world's best active female welterweight by The Ring and BoxRec, and the third best active female, pound for pound, by BoxRec, and fourth by The Ring and ESPN.
Chantelle Cameron is an English professional boxer. She is a former world champion in two weight classes, including the former undisputed light-welterweight champion, having held the WBC title between 2020 and 2023; the IBF and Ring magazine titles between 2021 and 2023 ; and the WBA and WBO titles between November 2022 and 2023. She previously held the IBO female lightweight title from 2017 to 2019.
Mary Ann McGee is an American professional boxer. She held the IBF female light welterweight title from 2019 to October 2021 and challenged for the WBC female lightweight title in 2013. As of October 2021, she is ranked as the world's second best active female light welterweight The Ring.
Cindy Serrano is a Puerto Rican professional boxer who held the WBO female featherweight title from 2016 to 2017. She also challenged for the WIBA featherweight title in 2005; the WIBA and WIBF welterweight titles in 2011; and the unified WBA and IBF female lightweight titles in 2018. Her younger sister, Amanda, is also a professional boxer. The pair became the first sisters to hold world titles from major sanctioning bodies at the same time after Cindy captured the WBO title in 2016.
Ornella Domini is a Swiss professional boxer. She is a two-time European female welterweight champion, having held the title since 2019 and previously from 2013 to 2015. She also challenged for the WBC female super-welterweight title in 2018. As of September 2020, Domini is ranked as the world's fifth best active female welterweight by The Ring and ninth by BoxRec.
Chantelle Cameron vs Mary McGee, billed as "The Road to Undisputed", was a professional boxing match contested between WBC female light-welterweight champion, Chantelle Cameron, and IBF female light-welterweight champion, Mary McGee, with the inaugural Ring magazine title also on the line. The bout took place on 30 October 2021 at The O2 Arena in London. Cameron defeated McGee via unanimous decision.
Katie Taylor vs Chantelle Cameron, billed as Homecoming, was a championship professional boxing match contested in the light-welterweight division between undisputed lightweight champion Katie Taylor and undisputed light-welterweight champion Chantelle Cameron. The bout took place on 20 May 2023 at the 3Arena in Dublin, Ireland. Cameron defeated Taylor via majority decision.
Estefania Karen Alaniz
Chantelle Cameron 
Cecilia Brækhus 
Casino de Salle Medecin, Monte Carlo, Monaco
Enis Pacheco
Katie Taylor 
Barclays Center, New York City, New York, US