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3. Not shoving with an open ended str8 draw when the guy is short stacked like that, ok, is that because there
a) isn't enough in his stack to make the push profitable?
Actually, the bigger the stack, the worse pushing is from an equity perspective because you are way behind 1 pair hands:
http://twodimes.net/h/?z=4498677
pokenum -h 4s 9c - ac jc -- jh th 8s
Holdem Hi: 990 enumerated boards containing 8s Jh Th
cards win %win lose %lose tie %tie EV
4s 9c 299 30.20 667 67.37 24 2.42 0.314
Ac Jc 667 67.37 299 30.20 24 2.42 0.686
Given the $1.50 in dead money, pushing would be correct from an equity standpoint if his stack was $1.22 or less. The bigger his stack, the worse the error if you push.
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b) it won't come in frequently enough
No, the problem is he'll come in too much.
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c) his short stack at this point will lower my fold equity
Yes! To be profitable, pushing draws relies on fold equity. While you have some pot equity, much of your value comes from pushing players out of the pot.
Short stacks generally want to stack off with at least top pair (if not much worse) and this guy's already 1/4 of his stack in the pot. The chance he's ever folding is very, very low.
In addition, in a spot like this it's very possible he either already has the straight, or he has both a better hand than you AND a better draw, like KQ
.