CHRIS PRATT and Jared Leto joined Mike Tyson in the famous faces watching UFC 300 from the T-Mobile Arena in Las Vegas.

The Hollywood pair are both huge fight fans and are no stranger to sitting cageside for the UFC.

Mike Tyson beamed from cageside at UFC 300
8

Mike Tyson beamed from cageside at UFC 300Credit: Getty

Facebooks boss Mark Zuckerburg with actor Jared Leto

8

Facebooks boss Mark Zuckerburg with actor Jared LetoCredit: Reuters

UFC chief Dana White has a word with super-fan Zuck
8

UFC chief Dana White has a word with super-fan ZuckCredit: Reuters

Hollywood's Chris Pratt was also in the house
8

Hollywood’s Chris Pratt was also in the houseCredit: Getty

Miles Teller takes his place in the crowd
8

Miles Teller takes his place in the crowdCredit: Getty
Guardian of the Galaxy’s Pratt was all smiles dressed in a black shirt as he took his place in the arena with Miles Teller also in the crowd.

As was Facebook boss Mark Zuckerberg, who was even in talks recently to fight Twitter owner Elon Musk.

Zuckerberg took his passion for martial arts to new heights in February when he cornered former featherweight champion Alexander Volkanovski.

But the social media mogul was instead just watching the night’s action alongside UFC boss Dana White and Leto.

Other sports names included NFL pair Maxx Crosby and Kyler Murray as well as women’s basketballer Kelsey Plum.

But perhaps no bigger name in the crowd was boxing icon Tyson, a close friend of White.

Tyson – who in 1986 became the youngest heavyweight champ of all time aged 20 – is in training to fight YouTuber-turned boxer Paul.

The controversial clash between Tyson, 57, and Paul, 27, is set for July 20 in Texas and has been scrutinised over the 30-year age gap.

US politician Vivek Ramaswamy – who recently withdrew his 2024 Republican presidential campaign – was also pictured with White.

The star-studded line up watched in shock as Max Holloway sensationally knocked out Justin Gaethje with ONE second left on the clock.

And in the main-event, Alex Pereira knocked out Jamahal Hill in just one round following a brutal left hook.

Arizona Cardinals quarterback Kyler Murray
8

Arizona Cardinals quarterback Kyler MurrayCredit: Getty

Women's basketball star Kelsey Plum
8

Women’s basketball star Kelsey PlumCredit: Getty

US politician Vivek Ramaswamy was at the T-Mobile Arena
8

US politician Vivek Ramaswamy was at the T-Mobile ArenaCredit: Getty