trapped with 2 pair

[xenthebrain]

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I think raising these flops is really important.

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What hands do you want to drive out on the flop? Ax? Slowplaying isn't always bad. See below.
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In this small pot there is no need to wait for a good turncard to driver others out. (if that was your plan)

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Now apply this fact to what hands you want to drive out: what odds those hands need and what odds they're getting.

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Ax (with x>5) has 6 outs against us (and doesn't know it).
The 3 fives and 3 cards to pair his kicker.
So his odds are about 1 to 6.8 to hit on the turn.

If I flat call SB here, he is getting 1 to 7, so his call would be correct.
If I raise SB he is just getting 1 to 4.
He is probably going to call thinking his hand is good (maybe some type of players with A6-9 fold).
According to the fundamental theorem of poker he is now making a mistake when he calls.

Getting 1 to 7 a call with a gutshotdraw wouldn't be that bad either due to implied odds.

So, we have the chance to give all these draws incorrect odds.
If they call we gain, if they fold we maximise our chances of winning the pot.

Someone with Ax is likely to call, so we gain from him.
Someone with a gutshot wouldn't get good implied odds to draw to his straight. If he calls, he is making a huge mistake, but if we don't raise he gets good odds anyway, so we wouldn't gain from him.

In my opinion, this is not a hand to slowplay like this.
When someone else improves he is not improving to a 2nd best hand, rather to a best hand.
Worse hands are likely to call on the flop and pay us off.
Any 3, 4, 5, and kickers to an A could kill us.

So, please tell me why do you think raising the turn is superior to raising the flop.

*grunch*

I was originally going to say why not cap the turn but after more thought I understand your predicament. With SB donking all the time it does make you very vulnerable to UTG. That being said, I only fear UTG w/ possible trips (or the baby straight - but would he be so aggressive with that?) Sorry I don't have more for you…I'm stumped…

[xenthebrain]

Why do you just call the first flopbet? I'd raise here.