With some notable exceptions — Pat Riley is one for sure, Gregg Popovich is another — there is no more powerful management figure in all of professional sports in this country than Brian Cashman who, for all intentions, shouldn’t even be called the general manager of the Yankees any longer, not when he seems to be working on a lifetime appointment. His title really ought to be Chief Justice Cashman. But Cash can only be this strong working for one of the weakest owners in professional sports, and that is Hal Steinbrenner. Whether he owns the most famous franchise this...