I'm assuming you want still photos and not video, eh?
It's not a question of which still image camera you get. But how you use the camera you've got...
If you want to freeze motion there are a few options:
1- Set your camera to it's auto "Sports" mode - that mode is geared to stop action. In most cases you can operate that mode hand held.
2- Set your camera to its "Shutter Priority" mode (if you have quasi manual settings like that - usually they're labelled "S" or "Tv" depending on the make of camera) - once it's in that mode you can set the speed manually - set your camera to > 1/500-1,000 sec. (it will set the aperture). You can use this approach hand-holding the camera.
3- A modif. to #2 above is to use that same method of setting, but put your camera on a tripod to keep it stable, focus your camera at a single spot where you expect your mates to run into, then snap when they hit that spot.
If you want to show motion & be more artsy in capturing sports:
1- Put your camera on a tripod. Set to the same 'Shutter Priority' mode mentioned in #2 above, but set to a slower shutter speed (around 1/30-1/60 sec). Let your mates run through the shot. The background will be in focus and they'll look blurred (to show they're moving very fast).
2-Hold your camera. Use that same ''Shutter Priority mode. But set your camera to 1/15-1/30 sec. Smoothly track ("pan") your mates with the camera as they run sideways across your field of vision (doesn't work if they're running towards you!). Depress the shutter release when you see the shot you want, but keep panning the camera in the direction you were going even after you snap (as if you were following thru on a golf swing). If you practice this technique what you should get is your mates in focus and the background blurred - again, to show motion.