Make sure you have a long lens. This is because you need to get far away shots, and you want them to be clear when doing so. For example, you want to make sure that the lens is long to get in the outfield for a softball team.
Ensure your shutter speed is HIGH. It's the most important to shooting sport because you want to stop that action in the process. You don't want your shutter speed below 1/1000.
Last but not least get your players excited to play with puts them in a better mood and eager to play so you can get the most of the pictures!