Okay, still early in the tourney but villain is certainly tight-passive. Only called 1 out 8 pf 2.5BB raises (I was leading out 90%-ish). Folds most of his SB, limps others, raised from SB maybe 2 times. Fit/fold play post flop from villain.

Blinds 20/10. Effective stacks 44.5BB
Villain $890 limps from SB
Hero $2110 with AK raises to $80. Villain re-pops to $340 total

HERO: Assumes villain has PP. I figure the number of times he has KK or AA is matched by weaker Aces. Would it be proper to shove here? We are out of position facing a likely coin flip. Not sure how-much I like calling and folding certainly seems out of the question.

Does our chip advantage factor into our play, or should we just be looking at effective stacks? All input is greatly appreciated.

make your decisions based on effective stack sizes. never fold AK here. ever.

Quite right, sir. The issue is calling vs shoving. Your take?

shove.

Also if someone has a chiplead and who has it makes no inherent difference in hu play, so yes just look at effective stacks

Easy shove. HU AK may as well be aces at a full ring game!

I prefer shoving, keep it simple with no tough decision on the flop.

agree with the others. shove 100% of the time in this spot. not because it is simple or easier to play this way, but because it will have the best expectation and the most value.

In general, 1:2 chip deficit and 2:1 chip lead should not change your decision making.

In general you rarely ever fold AKo in a 75bb or less HUSnG.

ship

not getting it in here is criminal, he even has the other AK alone more often than the times he has AA or KK counted together, not to mention that you do well enough vs QQ-22 that even if he had them all the time getting it in would be fine

Awesome. I shipped it, he had JJ and I hit an A on the flop. The main reason I posted is because I had a strong feeling he held a mid-pair. Being slightly behind, I was concerned that this play might not be optimal though you all confirmed it is.

2+2, you're the best in the bizz.

You want to get it in even if you know 100% he has middle pair, but it's not because you have a chiplead and just want to flip. It's because there's enough money in the pot already for getting it in at a slight disadvantage to be much better than folding.

Not sure if I understand what's so bad about calling? If we're sure he's only doing this with pocket pairs, why not wait to see a flop where we can get it in with 85% when we hit instead of shoving pf with no FE and only 45%?

We're out of position, we have fold equity if we shove. Also if he cbets on boards that miss us, we cannot actually realize our almost 50% equity, so we actually lose equity that way unless we know he always stacks off on any flop with all of his hands.

You say "get it in with 85%" like he will pay you off all the time if you hit. He can check back, he can fold.

Also, how on earth can you be sure that "he only has pocket pairs"?

OP: 4 bet shovving AKo pre is not a coinflip.