I first read that Asimov story, ‘The Billiard Ball’, back in the late ‘60s. It was in a book of Asimov short stories I got from the Science Fiction Book Club. Anyway, in the Forward to the book Asimov remarked that he originally wanted to title the story, ‘Dirty Pool’, but decided that would be too tacky. I think it would have been a perfect title.
Indeed, I shall hereafter remember the story as ‘Dirty Pool’.