The all-time #poundforpound tournament concludes, who is the number 1 pound-for-pound fighter of all-time? #UFC273 headlined by #UFC featherweight championship fight between champion #AlexanderVolkanovski and #6 ranked contender "#KoreanZombie" #ChanSungJung with the co-main event featuring a bantamweight championship rematch as champion #AljamainSterling vs interim champion #PetrYan.