I'm been shooting college football and baseball at my college and I would really like to shoot some football and baseball. I live near the KC Chiefs and Royals. How do I go about shooting for these teams? Do I contact their PR department or do I have to go through the NFL or MLB? Also, what equipment should I be using or needing to get? Right now I have a cannon 50d and a 70-200mm I'm guessing I have to get into the mark series and get a 300+mm? are NFL/MLB photographer allowed to move up and down the sideline or are they placed in one spot and not allowed to move?