Go inside the lives and gyms of four athletes preparing for UFC 221 in this replay of “Countdown”.

Former champion Luke Rockhold and ex-Olympic wrestler Yoel Romero both aim to capture the interim UFC middleweight title this Saturday night from Perth, Western Australia and the Perth Arena on pay-per-view.

Plus, heavyweights Mark Hunt and Curtis Blaydes brace for a massive clash.

Below is the current fight card:

MAIN CARD (PPV/10 p.m. ET)

Interim UFC Middleweight Championship
Luke Rockhold vs. Yoel Romero

Heavyweight: Mark Hunt vs. Curtis Blaydes

Heavyweight: Tai Tuivasa vs. Cyril Asker

Welterweight: Jake Matthews vs. Li Jingliang

Light Heavyweight: Tyson Pedro vs. Saparbek Safarov

PRELIMINARY CARD (FOX Sports 1/8 p.m. ET)

Lightweight: Damien Brown vs. Dong Hyun Kim

Middleweight: Rob Wilkinson vs. Israel Adesanya

Lightweight: Jeremy Kennedy vs. Alexander Volkanovski

Flyweight: Ben Nguyen vs. Jussier Formiga

PRELIMINARY CARD (UFC Fight Pass/6:30 p.m. ET)

Lightweight: Mizuto Hirota vs. Ross Pearson

Bantamweight: Teruto Ishihara vs. Jose Alberto Quinonez

Welterweight: Luke Jumeau vs. Daichi Abe