Former UFC and PRIDE champion, the light heavyweight legend said goodbye to MMA with a defeat to Ihor Potieria at UFC 283, in Rio de Janeiro.
Mauricio Shogun (27-14-1)
The same event marked the farewell of the former light heavyweight champion, defeated in a title fight against Jamahal Hill.
Glover Teixeira (33-9)
Considered by many to be the greatest heavyweight in history, the 'Last Emperor' said goodbye in February, with a defeat to Ryan Bader at UFC 290.
Fedor Emelianenko (40-7-1NC)
Former champion and one of the record holders for UFC lightweight belt defenses, Bendo said goodbye with a loss to Usman Nurmagomedov at Bellator 292.
Benson henderson (30-12)
A lightweight with almost 15 years of WEC/UFC experience, Raphael left his gloves in the Octagon after losing to Davey Grant at UFC Las Vegas in March.
Raphael Assunção (28-10)
One of the UFC's most popular athletes, 'Gamebred' announced his retirement after losing to Gilbert Durinho at UFC 287, in Miami, his hometown.
Jorge masvidal (19-6)
A three-time UFC featherweight title challenger, the American hung up his gloves after losing to Eddie Alvarez in a war at BKFC.
Chad Mendes (18-5)
The greatest fighter of all time left her gloves and belts in the Octagon after defending her bantamweight title against Irene Aldana at UFC 289, on June 10.
Amanda nunes (23-5)
Former welterweight champion, Lawler ended his career on a high note with a brutal knockout over Niko Price at UFC 290 in July.
Robbie Lawler (30-16-1NC)
Former featherweight title challenger, 'Zumbi' had one of the most emotional farewells of the year in his defeat to Max Holloway in Singapore, in August.
Korean zombie (17-8)
ONE Championship legend, the former atomweight champion retired at the age of 27 following the tragic death of her younger sister Victoria Lee
Angela Lee (17-3)
Two-time PFL lightweight champion, the 'Canadian Gangster' announced his retirement after winning his second title in November.