The Transnational Boxing Rankings Board's latest rankings- those based on fights held through October 9, 2021- were posted on the TBRB's website October 11, 2021. There were changes in the rankings for heavyweight, light heavyweight, junior middleweight, and featherweight divisions.

HEAVYWEIGHT:

Champion: Tyson Fury

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

Out from rankings posted October 4, 2021:
No one

LIGHT HEAVYWEIGHT:

Champion: Artur Beterbiev

1 (1) Dmitry Bivol
2 (2) Joe Smith, Jr.
3 (3) Gilberto Ramirez
4 (4) Maxim Vlasov
5 (5) Marcus Browne
6 (6) Badou Jack
7 (7) Eleider Alvarez
8 (8) Joshua Buatsi
9 (10) Callum Smith
10 (-) Dominic Boesel

Out from rankings posted October 4, 2021:
#9 Robin Krasniqi

JUNIOR MIDDLEWEIGHT:

Champion: OPEN

1 (1) Jermell Charlo
2 (2) Brian Castano
3 (3) Erickson Lubin
4 (5) Erislandy Lara
5 (6) Tony Harrison
6 (7) Jeison Rosario
7 (8) Tim Tszyu
8 (9) Sebastian Fundora
9 (10) Patrick Teixeira
10 (-) Vladimir Hernandez

Out from rankings posted October 4, 2021:
#4 Julian Williams

Editor's Notes:
- #5 ranked Tony Harrison last won on 12/22/18 (UD 12 over Jermell Charlo). Since then, he's lost to Charlo (12/21/19; KO-11) and fought to a 12-round, split decision draw with Bryant Perrella on 4/17/21.
- #6 ranked Jeison Rosario last won on 1/18/20 (TKO-5 over Julian Williams). Since then, he's lost to Jermell Charlo (9/20/20; KO-8) and Erickson Lubin (6/26/21; KO-6) and has announced he'll be moving up to the middleweight division (where he is already ranked #10 by the WBA).

FEATHERWEIGHT:

Champion: OPEN

1 (1) Mauricio Lara
2 (2) Kid Galahad
3 (3) Emanuel Navarrete
4 (4) Tugstsogt Nyambayar
5 (6) Josh Warrington
6 (7) Eduardo Ramirez
7 (8) Leigh Wood
8 (9) Mark Magsayo
9 (10) Michael Conlan
10 (-) Joet Gonzalez

Out from rankings October 4, 2021:
#5 Jessie Magdaleno (extended inactivity)

Editor's Note:
- #4 ranked Tugstsogt Nyambayar fought and lost as a junior lightweight on July 3, 2021 (UD 12 to Chris Colbert). He last fought as a featherweight on September 19, 2020 (SD 12 win over Cobia Breedy).