Here’s your crash course on today’s card and how to catch it. The main event goes live around 2 p.m. ET in the U.S., with prelims streaming earlier at 10 a.m. on ESPN+. UK fans can tune in on TNT Sports Box Office, while Australian viewers will wake up early Sunday morning to catch the action.

As usual, you cannot legally stream the main UFC 321 fight card for free anywhere (although starting in 2026, that option will be available via Paramount+ ). That’s even trickier now with the shutdown of StreamEast. It is exclusively a pay-per-view event. But the event is more than just the five main card fights.

A pivotal UFC event takes place in Vancouver, Canada, with Reinier de Ridder and Brendan Allen set to clash in the main event with middleweight title implications on the line.

There is a full slate of UFC action set to take place on Saturday, Oct. 18 when UFC Fight Night: De Ridder vs. Allen takes place.

Tom Aspinall vs. Ciryl Gane, Virna Jandiroba vs. Mackenzie Dern and more had final UFC 321 faceoffs at ceremonial weigh-ins.

Watch the full episode video of UFC 321 Countdown, featuring Tom Aspinall, Ciryl Gane, Virna Jandiroba, and Mackenzie Dern.