Ailin Perez won't fight at UFC Mexico if Macy Chiasson misses weight Ailin Perez is well aware of Macy Chiasson's past issues on the scale, and if Chiasson doesn't make weight for UFC Mexico, Perez is not fighting. Content Original Link: https://sports.yahoo.com/articles/ailin-perez-wont-fight-ufc-220214035.html