Alex Volkanovski wants into the UFC's champ-champ club after his latest dominating performance ... telling TMZ Sports he wants to go up a weight class and fight the winner of Justin Gaethje vs. Charles Oliveira.
We talked to 33-year-old Volkanovski -- who was nearly flawless against the "Korean Zombie" Saturday night at UFC 273 -- and asked him, in a perfect world, what and/or who he wanted next, and without hesitation, Volk dropped this news.
"Lightweight title.