Err ... I fail to see why you have to be faster to "freeze action". That just makes no sense at all.
If you use a tripod (plus maybe a cable release/remote control, and a mirror fixed, so the camera doesnt vibrate from it), you could always use the same shutter speed, no matter the focal length. This is the shutter speed you need to not get blurr from the movement of your subject. As long as you have the same frame (such as full body with some extra), this will stay constant. Only if you get closer you'll have to be even faster.
However, the problem with longer lenses is that you are more likely to blurr the picture yourself through movement of your hand. Thats why there is this rule "Handheld shutter speed must be at least about as fast as your focal length, assuming you use all techniques necessary to hold the camera still". Which does NOT just apply to action sports, but to really ANYTHING.
And which is broken for example by the new Nikon D800, because resolution is so high you have to add even more shutter speed if you use the camera handheld.
Use of a tripod, use of a monopod, use of natural supports, image stabilization/optical stabilization/vibration reduction/however else you want to call the camera automatic in question all serve the purpose to reduce blurr caused by holding the camera with your hand.