UFC's newest star Michael Chandler says he's taking his job as "alternate" for the Khabib vs. Gaethje fight very seriously ... and he'll be ready to step in if either fighter can't go on Saturday.
As we previously reported, several Khabib fights have been scrapped at the last minute to due unforeseen circumstances ... from bad weight cuts to freak injuries.
So, Dana White has a backup plan for UFC 254 -- flying out Michael Chandler, one of the best lightweights in the world, to stay ready in case something happens to either Justin or Khabib before that bell rings.