1. The most import setting on you DSLR when shooting sports is your shutter speed. (Tv on Canon dial and s on Nikon dial). For most sports you need a 1/500 shutter speed to “freeze” action and obtain clear pictures.
2. You will need a lens with a large aperture (low f number), to let in as much light as possible.
3. The length of your lens matters, when you want to fill the frame with an athlete that is far away.
4. If your lens does not give you enough light at its maximum aperture (images are coming out dark). Bump your ISO up to 800 - 3200 in order to get the correct exposure (neither too light, nor too dark)
5. pictureline rents long lenses with large apertures, so you don’t have to go out and spend thousands of dollars when you only need one a few times a year.
For more information click here.