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Why? Do you really think T9s is the best hand at that point? Or do we have a read that we'll push the limper out if we bet the flop and he missed?


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Because it's very good to isolate weak/passive players who will go to showdown with any piece when your hand has absolutely no showdown value, like T9s. It's even better if one of the blinds are likely to come along & go to showdown with any piece as well.

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So would you raise 23s in this situation? 45s? 78s? Are we just counting on the fact we can outplay them post flop?

I just don't get trying to isolate with what we're pretty damn sure is a worse hand than the person were isolating. Raising with a worse hand is -EV right? What makes it +EV in the long run?

There's some key concept I'm just not groking.