Frequently Asked Questions - Abandoned Throw
Abandoning a throw means that (except for being added to the score) the throw never happened. The original throw plus one penalty throw are counted in your score. When you abandon a throw, the resulting lie is disregarded and any penalties incurred by that throw are disregarded as well.
You will be throwing 3 after declaring that you are abandoning your drive. You count your original throw and add one penalty throw for abandoning that throw. Penalties incurred by an abandoned throw are not counted.