Curiously enough, it was that if you could not actually see the tip hit the ball a second time, you could not call a double hit. Physics be damned. And that's the rule I used. Richie Florence was the victim of one of the most obvious double hits one could hope to see, except it was too fast to see, of course. What I said was, "39", which was the ball count. The shooter said, "You made a good call." Ritchie was irritated.... What was the bizarre rule?