Nine-ball is rotation pool, the balls are pocketed in numbered order. The only ball that means anything, that wins it, is the 9. Now, the player can shoot eight trick shots in a row, blow the 9, and lose. On the other hand, the player can get the 9 in on the break, if the balls spread right, and win. Which is to say, that luck plays a part in nine-ball. But for some players, luck itself is an art.