I have seen with a real fast slapper up that sometimes teams keep their 1b back and have 2nd move in to cover the slap. Seen it done the more conventional way also.On my 18U team when there is a fast slapper my 2B has to sprint full out to 1B to be in time for the throw. No way a pitcher gets there. When you get a 2B that can get there and handle the throw with somebody sprinting right at her you are very fortunate.