To stop motion (take action pics without blur) you'll need a fairly high shutter speed. Try to keep it above 1/1000 if there's quick movement. Also, image stabilization won't help while shooting sports. You're going to be using shutter speeds high enough to eliminate the effects of camera shake, and IS won't do anything to keep the subject from moving. At most, you could use a monopod, but a tripod won't be a good option because you'll want to move around to get different shots.
The most important thing is to keep the shutter speed high (1/1000+) If you have a faster lens (low f/stop number) this will help, but your field of focus will be much narrower. But if done right, a narrow field of focus will look cool (subject in focus, background blurry. It's called bokeh) If someone's standing still, you can obviously get away with a lower shutter speed.
If there's enough light, you'll be able to do it. There will have to be some pretty bright lights though.