I find sport mode is grainy....

what I found useful is using it on manual mode.... and just settign the shutter speed higher so it´s faster.... but you´ll have to adjust the aperture also....

or you can just use the Tv mode, set a spedd of 150-200 which is pretty good.... but you can try different speeds....fo different needs.... and tv will adjust the aperture but you might need the flash in certain shots.......