If there was a rule that it's being done ever ten racks, for example, why not? As to the "integrity" of a run, if we ever expect anyone to run four digits, I don't believe this could be at all achieved without cleaning the cue ball occasionally. At least not in our climate. It can be such a problem, I have now made it a habit to clean the cue ball racking for my next break with the type of plexiglass marker our refs use at e.g. the European Championships each time I'm on a reasonable run with no end in sight. Even in situations where the chalk spots on the cue ball don't necessarily lead to a miss, I've seen the cue ball climb an object ball and hop instead of slide all the way to the stack etc. - no fun when this happens e.g. at 98+/99.
Agree. Having said that, again, depending upon climate, one will
never see this…
Greetings from Switzerland, David.
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„J'ai gâché vingt ans de mes plus belles années au billard. Si c'était à refaire, je recommencerais.“ – Roger Conti