In U.F.C., Retirement Threats Are the Fighters' New Leverage - The New York Times

Amanda Nunes retires after win in title defense at UFC 289

Bare Knuckle Fighting Championship, fighting

Terrance McKinney plans to appeal most recent loss, details decision to take short-notice fight at UFC Vegas 78 - MMA Fighting

Cody Garbrandt: The rise and fall of a former champion

Mixed Martial Arts vs. Street Fighting, fighting

Mixed Martial Arts vs. Street Fighting, fighting

WWE Acquired by UFC Owner Endeavor to Form Fighting Heavyweight - The New York Times

Full contact

The M.M.A. Doctor's Dilemma: To Stop or Not to Stop the Fight - The New York Times

Fighting (2009) - IMDb, fighting

What does the Bible say about extreme fighting?, fighting