UFC 273 pre-event facts: Will Khamzat Chimaev remain untouchable?

After a week hiatus, the UFC returns Saturday to open its April schedule with UFC 273, which takes place at VyStar Veterans Memorial Arena in Jacksonville, Fla., with a main card that airs on pay-per-view following prelims on ESPN and ESPN+.

A championship doubleheader takes center stage atop the card. In the main event, Alexander Volkanovski (23-1 MMA, 10-0 UFC) is set to put his featherweight title on the line against Chan Sung Jung (17-6 MMA, 7-3 UFC). The co-main event will see bantamweight titleholder Aljamain Sterling (20-3 MMA, 12-3 UFC) meet interim champion Petr Yan (16-2 MMA, 8-1 UFC) in a unification bout rematch.

Several other ranked and notable fighters are scheduled to compete at UFC 273, as well, and for more on the numbers, check below for 70 pre-event facts.