The Transnational Boxing Rankings Board's latest rankings- those based on fights held through March 27, 2021- were posted on the TBRB's website March 30, 2021. There were changes in the rankings for the heavyweight, cruiserweight, and junior flyweight divisions.

HEAVYWEIGHT:

Champion: Tyson Fury

1 (1) Anthony Joshua
2 (2) Deontay Wilder
3 (7) Dillian Whyte
4 (3) Andy Ruiz, Jr.
5 (5) Luis Ortiz
6 (6) Michael Hunter
7 (8) Joe Joyce
8 (9) Otto Wallin
9 (10) Joseph Parker
10 (-) Oleksandr Usyk

Out from rankings posted March 23, 2021:
#4 Alexander Povetkin

CRUISERWEIGHT:

Champion: Mairis Briedis

1 (1) Yuniel Dorticos
2 (2) Ilunga Makabu
3 (3) Lawrence Okolie
4 (5) Thabiso Mchunu
5 (4) Kevin Lerena
6 (6) Aleksei Papin
7 (7) Michal Cieslak
8 (8) Arsen Goulamirian
9 (9) Mateusz Masternak
10 (10) Krzysztof Glowacki

Out from rankings posted March 23, 2021:
No one

JUNIOR FLYWEIGHT:

Champion: OPEN

1 (1) Kenshiro Teraji
2 (2) Hiroto Kyoguchi
3 (3) Felix Alvarado
4 (4) Elwin Soto
5 (5) Edward Heno
6 (8) Mark Vicelles
7 (6) Tetsuya Hisada
8 (7) Agustin Mauro Gauto
9 (9) Jesse Rodriguez
10 (10) Jonathan Gonzalez

Out from rankings posted March 23, 2021:
No one