[2] It was originally planned to take place as a Fight Night on ESPN+ at Pechanga Arena in San Diego, California.

[6] The pairing was previously scheduled to headline UFC on ESPN: Overeem vs. Rozenstruik on December 7, 2019 but Harris pulled out of the fight in early November, citing the disappearance and death of his stepdaughter in her home state of Alabama.

[7][8] They were later booked to headline UFC Fight Night: Overeem vs. Harris on April 11, but the event was cancelled due to the COVID-19 pandemic.

[10] Due to travel restrictions related to the COVID-19 pandemic, some Brazilian fighters were unable to compete due to visa issues at the original event – Lara Procópio (who was expected to face Cortney Casey in a women's flyweight bout), former KSW Women's Flyweight Champion Ariane Lipski and Luana Carolina (who were expected to meet at the same weight).

[3] On April 2, the California Department of Consumer Affairs, the division of the state government that includes the California State Athletic Commission (CSAC), extended a ban on combat sports events through the end of May due to the COVID-19 pandemic, making the venue unable to host the fight card.