In the week before each event, the UFC releases for a limited time a series of complete free fights featuring fighters prominent on the latest card. The first free fights are out for Saturday's UFC on ESPN+ 34, also known as UFC Fight Night: Overeem vs. Sakai, UFC Vegas 9, and UFC Fight Night 176.
This is Alistair Overeem vs. Walt Harris in the main event of UFC on ESPN 8 on May 16, 2020. 'Reem fights Augusto Sakai in the main event on Saturday.
https://www.youtube.com/watch?v=P9iwTW2_3mE
And this is Sakai vs. Marcos Conrado on on the debut episode of the Brazilian season of Dana White's Contender Series on August 10, 2018.
https://www.youtube.com/watch?v=3qHwtLzOQ9s&feature=emb_title