On their own, the main and co-main events of UFC 238 are fine contests. Marlon Moraes is a highlight reel machine and Henry Cejudo absolutely demoralized the previous champion at bantamweight in TJ Dillashaw. In the co-main, Valentina Shevchenko is a surgically precise champion at women’s flyweight who we should appreciate, even if her opponent, Jessica Eye, feels underwhelming as a title challenger. But let’s be honest, they were never going to get a large swath of people to tune in. They just don’t have enough of a pull to get casual viewer to tune in. Donald Cerrone on the other hand….