Seems to me like bowling rules could use an update. When every pro is so good that they are just competing on mental focus, the nature of the ball, and slight environmental factors like the changing slickness of the wood, it has ceased to become compelling competition. I’d love to see some kind of dynamic interaction between the players: e.g. if you hit your 3 pin, it gets added to the opposing player. Something like that.

I suppose this goes for all sports of this kind where the players actions don’t affect each other.