The best reason that I can muster is that, since it is not something that happens every week or several times a week, that the local news stations don't feel it is as important to cover it. MMA is still relatively young in terms of being a regulated sport (it still has yet to be regulated in NY state) and given time, it will be covered more. ESPN covers it whenever there is a major event occurring, and the best way i can compare it to is boxing. Boxing is not covered as much as other sports on major stations, and I attribute that to the sport's infrequent nature as the reasoning behind this. Again, give MMA a few years and maybe it will be covered more.