Overview:UFC on ESPN 8: Overeem vs. Harris was a mixed martial arts event produced by the Ultimate Fighting Championship that took place on May 16, 2020 at VyStar Veterans Memorial Arena in Jacksonville, Florida, United States. A heavyweight bout between the 2010 K-1 World Grand Prix Champion, former Strikeforce Heavyweight Champion and UFC Heavyweight Championship challenger Alistair Overeem and Walt Harris was the main event.