Well, this was bound to happen.
Nate Diaz and Khabib Nurmagomedov were in the vicinity of one another at UFC 239, and probably shouldn't have been. The two, as well as Khabib's manager Ali Abdelaziz were seated near each other at UFC 239, which nearly led to a brawl between the two.
Security would break up the almost-skirmish and re-seat the two. Twitter user @UnitedStatesRed posted a close-up video of the happenings.
Khabib Nurmagomedov is set to fight Dustin Poirier to unify the UFC Lightweight Championships later this year, while Nate Diaz will return to action against Anthony "Showtime" Pettis. Neither man has commented on the incident thus far.