The marquee UFC 291 fight between Michel Pereira and Stephen Thompson was scratched hours before the event began in Salt Lake City, per UFC reporter Megan Olivi and ESPN's Marc Raimondi.
Prior to the fight, USA Today's Nolan King reported Pereira weighed in at 174 pounds, three over the welterweight limit. This is the second such UFC incident for the Brazilian fighter, who was one pound over the welterweight limit before a 2019 bout with Tristan Connelly.
Thompson, at 170.5 pounds, came in under the limit.
It is unclear if the fight's cancellation is related to Pereira not making weight.