Man, this horse is so dead it's damn near a fossil but still the poor bugger keeps getting flogged.
In the world of WGT we play the one ball rule, or a very near approximation of it anyway. I say very near because, as has been pointed out, we can carry on with the free ball if we run out during a round. Icon personally drives across whatever course you're on in his gold plated Bentley and hands you a sleeve of these wonder balls. On a silver plate no less.
As BTB pointed out, would you rather he drove up to you and threw you off the course? Because he could. Don't let that pink tutu fool you.
Have enough balls to finish the round. It ain't rocket science.