Possible Clues:

• Cage fighting sport: Abbr
• UFC combat style
• Ronda Rousey's combat sport, for short
• Combat sport fought in a cage: Abbr
• Sport also known as cage fighting, in brief
• Sprawl-and-brawl sport, briefly
• Sport with kicking and boxing, for short
• Sport competed in barefoot, in brief
• Combat sport, for short
• Sport for Ronda Rousey, for short