Watch Sadisflix. UFC Fight Night 161: Joanna vs. Waterson was a mixed martial arts event produced by the Ultimate Fighting Championship that took place on October 12, 2019 at Amalie Arena in Tampa, Florida. A women's strawweight bout between former UFC Women's Strawweight Champion Joanna Jędrzejczyk and former Invicta FC Atomweight Champion Michelle Waterson served as the event headliner.