For example: Terence Crawford

Adam Kownacki

Poland

Heavyweight (Unlimited)

Robert Helenius

Finland

Heavyweight (Unlimited)

Mairis Briedis

Latvia

Cruiserweight (200 lbs)

Yuniel Dorticos

Cuba

Cruiserweight (200 lbs)

Oleksandr Usyk

Ukraine

Cruiserweight (200 lbs)

Derek Chisora

United Kingdom

Heavyweight (Unlimited)

Vasiliy Lomachenko

Ukraine

Super Featherweight (130 lbs)

Teofimo Lopez

USA

Lightweight (135 lbs)

Dillian Whyte

United Kingdom

Heavyweight (Unlimited)

Alexander Povetkin

Russia

Heavyweight (Unlimited)

Mikey Garcia

USA

Lightweight (135 lbs)

Jessie Vargas

USA

Welterweight (147 lbs)

Denys Berinchyk

Ukraine

Super Lightweight (140 lbs)

Hector Edgardo Sarmiento
Deontay Wilder

USA

Heavyweight (Unlimited)

Tyson Fury

United Kingdom

Heavyweight (Unlimited)

Jon Jones

USA

Light Heavyweight (205 lbs)

Dominick Reyes

USA

Light Heavyweight (205 lbs)

Khabib Nurmagomedov

Russia

Lightweight (155 lbs)

Tony Ferguson

USA

Lightweight (155 lbs)

Conor McGregor

Ireland

Lightweight (155 lbs)

Donald Cerrone

USA

Welterweight (170 lbs)

Kamaru Usman

Nigeria

Welterweight (170 lbs)

Colby Covington

USA

Welterweight (170 lbs)

Stefan Struve

Netherlands

Heavyweight (265 lbs)

Ben Rothwell

USA

Heavyweight (265 lbs)