"co- prefix Definition of co- (Entry 5 of 5) 1: with : together : joint : jointlycoexistcoheir 2: in or to the same degree" Co-main suggests that the bout is of equal importance or significance to the main event. In the case of cards with multiple title fights, that's the correct usage of the term co main. This card doesn't have a co-main. It has a second last fight between two fighters with a UFC record of 0-1. That's not a co-main and I wish they'd stop calling every second last fight a co-main. What other cards had fights that shouldn't have been called co-mains?