UFC's Frankie Edgar -- Let's Get Shaq In the Octagon ... He's Got Real Talent!

He can hoop, he can rap, he can act (sorta) ... but can Shaquille O'Neal fight MMA?! There's one UFC superstar who believes in the Big Fella ... Frankie "The Answer" Edgar ... who tells TMZ Sports he thinks O'Neal's got what it takes to SERIOUSLY…

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