The UFC’s traditional pre-event show returns tonight with the debut of “Countdown to UFC 223: Ferguson vs. Nurmagomedov” on FS1.

The one-hour special previews the card’s title fight between interim lightweight champion Tony Ferguson (23-3 MMA, 13-1 UFC) takes on Khabib Nurmagomedov (25-0 MMA, 9-0 UFC). The winner will become the undisputed 155-pound champion since Conor McGregor has yet to defend the belt he won in November 2016.

The show also will dive into the co-feature title rematch between women’s strawweight champion Rose Namajunas (7-3 MMA, 5-2 UFC) and Joanna Jedrzejczyk (14-1 MMA, 7-1 UFC). Namajunas will put her belt on the line for the first time since she took it from Jedrzejczyk at Madison Square Garden at UFC 217 in November.

“Countdown” airs at 10 p.m. ET (7 p.m. PT) on FS1, and replays air throughout the week.

UFC 223 will take place Saturday at Barclays Center in Brooklyn, N.Y. The main card will air on pay-per-view following prelims on FS1 and UFC Fight Pass.

The UFC 223 card includes:

MAIN CARD (Pay-per-view, 10 p.m. ET)

Tony Ferguson vs. Khabib Nurmagomedov – for lightweight title Champ Rose Namajunas vs. Joanna Jedrzejczyk – for women’s strawweight title Calvin Kattar vs. Renato Moicano Michael Chiesa vs. Anthony Pettis Paul Felder vs. Al Iaquinta

PRELIMINARY CARD (FS1, 8 p.m. ET)

Felice Herrig vs. Karolina Kowalkiewicz Ray Borg vs. Brandon Moreno Chris Gruetzemacher vs. Joe Lauzon Evan Dunham vs. Olivier Aubin-Mercier

PRELIMINARY CARD (UFC Fight Pass, 6:15 p.m. ET)

Alex Caceres vs. Artem Lobov Ashlee Evans-Smith vs. Bec Rawlings Devin Clark vs. Michael Rodriguez Kyle Bochniak vs. Zabit Magomedsharipov

For more on UFC 223, check out the UFC Rumors section of the site.