[Hoi Polloi]

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abc predictable preflop player

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A lot of discussion of what ABC means. If "predictable" means, you know, predictable, as in based on your actions pre-flop a good hand reader can predict with an unusually high rate of accuracy what your cards are, I would think as your opponents are increasingly strong hand readers who know how to exploit their reads you will put yourself at a serious disadvantage that your otherwise perfect poker will be hard-pressed to overcome.

If by predicatable you mean game-theoretical optimal, designed to exploit your tough, tricky opponents in such a way that you always get the best of it preflop, setting the stage for out-playing your opponents post-flop: well, then I think you should do very well.