UFC 273 Countdown previews Alexander Volkanovski’s defense of his featherweight belt against The Korean Zombie, Chan Sung Jung. See these athletes train and prepare for their bouts on Saturday, April 9.

Khamzat Chimaev and Gilbert Burns face off early. Mackenzie Dern and champ Alexander Volkanovski stay sharp in their training rooms. Fans brave the rain to see the press conference, where Aljamain Sterling and Petr Yan get heated. UFC 273 is Saturday, April 9.

Check out some of the highlights from today's UFC 273 pre-fight press conference featuring Alexander Volkanovski, The Korean Zombie, Aljamain Sterling, Petr Yan, Gilbert Burns, Khamzat Chimaev, Tecia Torres and Mackenzie Dern.

Gilbert Burns wraps up his training camp. Champion Aljamain Sterling flies to Florida. Khamzat Chimaev focuses on his win. Korean Zombie has Christmas in April. Athletes including Petr Yan and Alexander Volkanovski do photo shoots and interviews.

UFC 273 Countdown previews Alexander Volkanovski’s defense of his featherweight belt against The Korean Zombie, Chan Sung Jung, and bantamweight king Aljamain Sterling’s rematch with interim champ Petr Yan. Plus, welterweight rising star Khamzat Chimaev battles Gilbert Burns.

Champ Aljamain Sterling shows his old stomping grounds. Gilbert Burns gets coached from Brazil. Korean Zombie embraces fight week. Champ Alexander Volkanovski admires steaks. Khamzat Chimaev arrives with teammate Darren Till. #UFC273 #UFC #MMA

Champ Alexander Volkanovski explores the Deep South. Korean Zombie enjoys a home-cooked meal. Petr Yan has a night out with his team. Champion Aljamain Sterling studies his own fight film. | #UFC #UFC273

Champ Aljamain Sterling looks for an emphatic win, as does interim champ Petr Yan. Korean Zombie trains with Henry Cejudo. Champ Alexander Volkanovski readies for a fun fight. l #UFC #UFC273

UFC London Octagon Interviews | #UFC #UFCLondon #MMA

UFC Connected takes viewers back to 2002 where we saw the first UFC event take place in the UK, with the iconic backdrop of the Royal Albert Hall and some historical fights that made for one unforgettable night.