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.

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.

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.

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.

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.

Athletes make weight and then face off for three big bouts at UFC 273: champ Alexander Volkanovski’s title defense vs Korean Zombie; the title unification fight between Aljamain Sterling and Petr Yan; and welterweights Gilbert Burns and Khamzat Chimaev.