UFC Vegas 28: Rozenstruik vs Sakai is a mixed martial arts event produced by the Ultimate Fighting Championship that took place on June 5, 2021 at the UFC APEX, Las Vegas United States.
UFC Vegas 28 Fight Card
Main Card
| Weight Class | Fight Card | Method | Round | Results |
| Heavyweight | Jairzinho Rozenstruik vs. Augusto Sakai | KO/TKO | R1 (04:59) | Jairzinho Rozenstruik def. Augusto Sakai |
| Heavyweight | Walt Harris vs. Marcin Tybura | KO/TKO | R1 (04:06) | Marcin Tybura def. Walt Harris |
| Middleweight | Roman Dolidze vs. Laureano Staropoli | Decision | R3 (05:00) | Roman Dolidze def. Laureano Staropoli |
| Welterweight | Santiago Ponzinibbio vs. Miguel Baeza | Decision | R3 (05:00) | Santiago Ponzinibbio def. Miguel Baeza |
| Middleweight | Dusko Todorovic vs. Gregory Rodrigues | Decision | R3 (05:00) | Gregory Rodrigues def. Dusko Todorovic |
| Women Flyweight | Montana De La Rosa vs. Ariane Lipski | KO/TKO | R2 (04:27) | Montana De La Rosa def. Ariane Lipski |
Preliminary Card
| Weight Class | Fight Card | Method | Round | Results |
| Heavyweight | Tanner Boser vs. Ilir Latifi | Decision | R3 (05:00) | Ilir Latifi def. Tanner Boser |
| Welterweight | Francisco Trinaldo vs. Muslim Salikhov | Decision | R3 (05:00) | Muslim Salikhov def. Francisco Trinaldo |
| Featherweight | Makwan Amirkhani vs. Kamuela Kirk | Decision | R3 (05:00) | Kamuela Kirk def. Makwan Amirkhani |
| Lightweight | Alan Patrick vs. Mason Jones | Decision | R2 (02:14) | No Contest |
| Women Flyweight | Manon Fiorot vs. Tabatha Ricci | KO/TKO | R2 (03:00) | Manon Fiorot def. Tabatha Ricci |
| Featherweight | Sean Woodson vs. Youssef Zalal | Decision | R3 (05:00) | Sean Woodson def. Youssef Zalal |
| Flyweight | Claudio Puelles vs. Jordan Leavitt | Decision | R3 (05:00) | Claudio Puelles def. Jordan Leavitt |
