[QueBob]

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BB is known 2+2 player

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This fact is meaningless.

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Preflop: 2+2er is BB CO posts a blind of $0.50.
UTG raises, Hero 3-bets with J [img]/images/graemlins/diamond.gif[/img], J [img]/images/graemlins/spade.gif[/img] 4 folds, CO (poster) calls, 2 folds, 2+2er caps, UTG calls, Hero calls, CO calls.

Flop: (16.50 SB) 5 [img]/images/graemlins/diamond.gif[/img], 9 [img]/images/graemlins/spade.gif[/img], K [img]/images/graemlins/diamond.gif[/img](4 players)
2+2er bets, UTG folds, Hero ....

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...folds immediately. Your odds are not as good as they seem, and they seem pretty piss poor. Chasing these draws because of the current immediate odds is bad chasing. Welcome to reverse implied odds.