Fighters
34 former champions who previously held major titles.
Men's Former Champions(20)
AK
WBC
Agit Kabayel
Heavyweight
27-0-0 (19 KO)
AR
WBA
Albert Ramírez
Light Heavyweight
22-0-0 (19 KO)
CS
WBO
Callum Smith
Light Heavyweight
31-2-0 (22 KO)
DJ
WBA
David Jiménez
Super Flyweight
18-1-0 (12 KO)
IBF
Eduardo Núñez
Super Featherweight
29-1-0 (27 KO)
GY
WBC
Galal Yafai
Flyweight
9-1-0 (7 KO)
IC
WBC
Isaac Cruz
Super Lightweight
28-3-2 (18 KO)
IBF
Jai Opetaia
Cruiserweight
29-0-0 (23 KO)
JE
WBA
Jaron Ennis
Super Welterweight
0-0-1 (31 KO)
JD
WBA
Jazza Dickens
Super Featherweight
36-5-0 (15 KO)
JR
WBC
Jesus Ramos
Middleweight
24-1-0 (19 KO)
JG
WBA
Jonathan González
Flyweight
4-1-1 (14 KO)
WBC
Knockout CP Freshmart
Light Flyweight
29-1-0 (11 KO)
WBC
Mario Barrios
Welterweight
29-2-2 (18 KO)
MC
WBC
Michał Cieślak
Cruiserweight
2-0-1 (22 KO)
MC
WBA
Mirco Cuello
Featherweight
16-0-0 (13 KO)
MG
WBA
Murat Gassiev
Heavyweight
2-0-1 (26 KO)
IBF
Richardson Hitchins
Super Lightweight
20-0-0 (8 KO)
RM
WBA
Ryūsei Matsumoto
Minimumweight
7-0-0 (5 KO)
VO
WBC
Vergil Ortiz Jr.
Super Welterweight
24-0-0 (22 KO)
Women's Former Champions(14)
AM
WBA
Alma Meraz Rodriguez
Light Flyweight
11-4-1 (2 KO)
CK
WBA
Che Kenneally
Light Heavyweight
5-0-0 (2 KO)
DT
WBC
Dina Thorslund
Featherweight
24-0-0 (9 KO)
JM
WBA
Jennifer Miranda
Featherweight
12-1-0 (1 KO)
KE
WBC
Kenia Enríquez
Flyweight
28-1-0 (11 KO)
MF
WBA
Mayelli Flores
Super Bantamweight
13-1-1 (4 KO)
ND
WBA
Nataly Delgado
Super Flyweight
18-7-2 (5 KO)
SW
WBA
Samantha Worthington
Super Lightweight
12-0-0 (7 KO)
SG
IBFWBO
Shadasia Green
Super Middleweight
16-1-0 (11 KO)
SP
WBA
Stephanie Pineiro
Welterweight
10-0-0 (3 KO)
TH
WBO
Terri Harper
Lightweight
16-2-2 (6 KO)
UI
WBC
Umi Ishikawa
Minimumweight
12-3-0 (10 KO)
VF
WBC
Virginia Fuchs
Super Flyweight
4-0-0 (1 KO)
VR
WBA
Viviana Ruiz
Flyweight
10-2-0 (5 KO)