Mike Jackson explains why he won’t refer to CM Punk by that name

When CM Punk announced his signing with the UFC, he said he’d prefer to continue going by that name, the one he gained fame under in the world of professional wrestling.
Punk, the former WWE champion, has said in interviews that the only people who call him by his birth name of Phil Brooks are those close to him. He’s been known as CM Punk for years and isn’t going to stop now in MMA.
Mike Jackson, though, is not buying it.
Jackson fights Punk in both of their second pro fight