[quarkncover]

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if you have an overpair or TPTK and get min-raised by a bad (45 VPIP+) opponent

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Not all 45 VPIP players are BAD. This usually denotes a Loose Passive player. In similar situations to yours I am guilty of getting stacked time and time again, partly due to multitabling and relying on PAHUD numbers to denote which players are good/bad. I am reevaluating which PAHUD numbers to use as I rely too heavily on VPIP and PFR. The thread going on right now in SSNL has some good ideas regarding this topic. Ultimately I strongly believe this situation comes down to stack sizes and reads. If villain is only sitting on a 30-50bb stack, I putting villain all-in in a heartbeat, barring reads. This is definitely a leak of mine that I am seriously mulling over.