When you buy through our links, Business Insider may earn an affiliate commission. Learn moreAlex Pereira punches Jiri Prochazka in the UFC light heavyweight championship fight during UFC 295 on November 11, 2023.Sarah Stier/Getty ImagesUFC 303 has finally arrived after some substantial fight card shake-ups. Alex Pereira of Brazil and Jiri Prochazka of the Czech Republic will once again compete for the light heavyweight champion title on Saturday night.