Watch UFC Fight Night 170: Lee vs. Oliveira (2020) : Full Movie Online Free UFC Fight Night 170: Lee vs. Oliveira was a mixed martial arts event produced by the Ultimate Fighting Championship that took place on March 14, 2020 at Ginásio Nilson Nelson in Brasília, Brazil. A lightweight bout between former interim UFC Lightweight Championship challenger Kevin Lee and Charles Oliveira served as the event headliner.