Kill Cliff FC

Kill Cliff FC, officially known as Kill Cliff Fight Club (formerly known as Sanford MMA, Hard Knocks 365, and Combat Club) is a mixed martial arts gym based in Deerfield Beach, Florida. It was originally founded in 2017 by Henri Hooft and Greg Jones as Combat Club and later Hard Knocks 365 before being rebranded to Sanford MMA in 2019 after obtaining a sponsorship deal with Sanford Health. In July 2022, the gym rebranded to Kill Cliff FC.

Overview
In 2017, Henri Hooft left the Blackzilians and alongside Greg Jones, founded the gym, Combat Club in Boynton Beach, Florida. This was later rebranded as Hard Knocks 365 after moving the gym to Fort Lauderdale, Florida to accommodate a bigger facility. Some of the fighters who were originally training at the Blackzilians would join the new gym.

In 2019, Hard Knocks 365 rebranded to Sanford MMA after obtaining a sponsorship deal with Sanford Health. A new training facility was opened in Deerfield Beach, Florida as part of the deal and Sanford Health also opened a supporting clinic adjacent to the team training facility.

In July 2022, the gym rebranded to Kill Cliff FC after Kill Cliff, an energy drink and CBD company acquired naming the rights to the gym.

The team includes roughly 40 fighters, 25 of whom fight within the largest three MMA promotions (UFC, Bellator and ONE), as well as former and current world champions.

Kill Cliff FC is notable for producing former UFC Welterweight Champion, Kamaru Usman. However, after being scheduled to fight Kill Cliff FC teammate Gilbert Burns at UFC 258, Usman left the gym in June 2020 to join Trevor Wittman at ONX Sports in Denver, Colorado. In 2022, Usman returned to Kill Cliff FC to prepare for his title defense against Leon Edwards at UFC 278. Usman subsequently lost his championship.

UFC

 * Kamaru Usman
 * Michael Chandler
 * Robbie Lawler
 * Luke Rockhold
 * Vitor Belfort
 * Rashad Evans
 * Gilbert Burns
 * Derek Brunson
 * Volkan Oezdemir
 * Vicente Luque
 * Michael Johnson
 * Stefan Struve
 * André Fialho
 * Takashi Sato
 * Randy Costa
 * Shavkat Rakhmonov
 * Li Jingliang
 * Shayilan Nuerdanbieke
 * Ian Garry
 * Rafael Fiziev

Bellator MMA

 * Jason Jackson
 * Logan Storley
 * Linton Vassell
 * Ádám Borics

ONE

 * Aung La Nsang
 * Martin Nguyen
 * Brandon Vera

PFL

 * Marina Mokhnatkina
 * Impa Kasanganay

KSW

 * Viktor Pešta

Kickboxers

 * Tyrone Spong