So, I figured I would ask here hoping maybe I'll catch the break I'm looking for. I've been photographing professional motorsports for the past 6 years and haven't had too much of an issue getting photo credentials for NHRA, world of outlaws, etc. I've have seemed to hit a brick wall with getting credentials for NCAA sports, NHL, NFL, MLB, etc. I've sent out emails with my portfolio contact information and the most I honestly get back is we'll hold on to your information and be in touch and then I don't hear back or he majority of places I'll email or call I just don't hear back period. For those that are professional photographers and or those that have obtained credentials how do you get them? Am I doing something wrong how could I improve my attempts? Or should I just keep grinding away on the phone? I've also attached a few of my photos that I provide in my portfolio below.