Shaquille O'Neal just agreed to a boxing match with a famous bodyguard ... and his son tells TMZ Sports even though the legend might be a bit old for this kinda thing, he'll support him nonetheless!!
We spoke with Myles at LAX this week ... fresh off Shaq's response to Will Smith's former security guy Charlie Mack, who challenged him to a celebrity boxing match.
Myles, a DJ, was caught off guard by Shaq's acceptance ... especially since his dad is 53 years old.