Shaq accepts Charlie Mack’s boxing challenge, saying “Diesel don’t run.” Here’s how their old feud could finally play out in the ring.

Shaquille O'Neal may have hung up his NBA jersey years ago, but he's not done stepping into the ring-this time, a boxing ring. The Hall of Famer has accepted a challenge from music industry veteran and Will Smith's former bodyguard, Charlie Mack, after Mack suggested the two settle an old score with gloves on.