Preview of UFC 258:
Kamaru Usman vs. Gilbert Burns (Welterweight Championship Bout)
Maycee Barber vs. Alexa Grasso (Flyweight Bout)
Kelvin Gastelum vs. Ian Heinisch (Middleweight Bout)
Julian Marquez vs. Maki Pitolo (Middleweight Bout)
Jim Miller vs. Bobby Green (Lightweight Bout)
