It's a big day for UFC.
The mixed martial arts league is being sold for a whopping $4 billion dollars to a group of investors led by talent agency WME-IMG.
It's the biggest sale in sports history, dwarfing previous sales of any sports franchise.
The previous record was held by the Los Angeles Dodgers, which was bought out of bankruptcy for $2.1 billion back in 2012.
UFC - which stands for ultimate fighting championship-- launched in 1993 and is the world's biggest and most successful mixed martial arts league.
UFC President Dana White will stay on to run the UFC, which has grown from a money-losing promotional company in a minor sport into a global entertainment brand.
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