The Transnational Boxing Rankings Board's latest rankings- those based on fights held through May 22, 2021- were posted on the TBRB's website May 25, 2021. A new divisional king was crowned and there were changes in the Pound-For-Pound Top Ten and in the rankings for the junior welterweight and strawweight divisions.


POUND-FOR-POUND:

1 (1) Saul Alvarez
2 (2) Naoya Inoue
3 (3) Terence Crawford
4 (4) Oleksandr Usyk
5 (5) Errol Spence, Jr.
6 (-) Josh Taylor
7 (6) Tyson Fury
8 (7) Juan Francisco Estrada
9 (8) Gennady Golovkin
10 (9) Teofimo Lopez

Out from rankings posted May 18, 2021:
#10 Roman Gonzalez

JUNIOR WELTWERWEIGHT:

Champion: Josh Taylor (had been #1)

1 (3) Regis Prograis
2 (2) Jose Carlos Ramirez
3 (4) Jose Zepeda
4 (5) Viktor Postol
5 (6) Ivan Baranchyk
6 (7) Pablo Cesar Cano
7 (8) Arnold Barboza, Jr.
8 (9) Robert Easter, Jr.
9 (10) Jack Catterall
10 (-) Mario Barrios

Out from rankings posted May 18, 2021:
No one
(Note: Champion had been OPEN)

STRAWWEIGHT:

Champion: OPEN

1 (1) Knockout CP Freshmart (Thammanoon Niyomtrong)
2 (2) Petchmanee CP Freshmart (Panya Pradabsri)
3 (3) Wanheng Menayothin (Chayaphon Moonsri)
4 (4) Wilfredo Mendez
5 (5) Victorio Saludar
6 (6) Rene Mark Cuarto
7 (-) Ayanda Ndulani
8 (7) Simpiwe Konkco
9 (8) Ginjiro Shigeoka
10 (10) Pedro Taduran

Out from rankings posted May 18, 2021:
#9 Nkosinathi Joyi

Editor's Note:
#8 Simpiwe Konkco last fought on October 25, 2019.