This hand just came up today in a €2/€5 Casino cash game.
We were playing 10-handed.

An old very solid pro opens from UTG to €25 (~€1200 stack)
Hero is in the CO and flats with TT (€385 behind)
Super loose crazy player flats from the SB (€190 behind)
Another very loose player also flats from my the BB

Flop AKThh (€100 in the pot)

SB lead-shoves 190 into 100
BB folds
UTG tanks and flats
Hero tanks for a long time and ???

Also, not 3betting pf with the TT might have been a mistake in the hand (not enough info otf) but flatting for balance shouldn’t be too bad.

Any opinion would be appreciated, thanks!

Not folding.

SB maniac flop shove makes folding here impossible. UTG is aware of SB's range as much as you are and can be calling pretty wide.

3 betting an utg open with TT tends to be an overplay.

It’s a trivial stack-off spot.

Welcome to the forum, OP. Please don't post results, as it biases advice. Get up to the decision you have questions about and stop there. I edited your post. Also, polls really don't add any value, as people will often suggest lines you didn't think to add on the poll.

Not here though. AP, obvious shove is obvious. UTG has a ton of AK in his range, and depending on which cards were hearts, a lot of TP+FD too. Sure, he has some AA/KK too, but that's only a few combos, especially since it will sometimes raise to iso.

The flat pre is not quite getting odds to set mine, but I probably play it the same way if I failed to reload fast enough to be playing a full stack. His range should be very strong to be opening UTG, but we still should be able to win unimproved often enough to make up the very small deficit in set-mining odds we have. 3-betting TT is something I'll do occasionally from the blinds or with short (or very deep) effective stacks, but I think it's an overplay here .

This is a super trivial jam - no debate. Do these threads only get created when a monster runs into the tip top of opponent's range and the op is all paranoid about results?

Easy shove against pretty much 99.999% of the poker population. I've probably met 1 or 2 people in my poker life that I'd even hesitate shoving here.. and yet I still would.

Even if the maniac flopped a straight we have outs.

We should consider the side pot that might form if we just flat.

If we think the old pro's range is limited to AA or KK (now that he has called the 190) our decision is obvious. But if he flats AK (more combinations of AK than KK+) then there is a modest chance he will bet the turn.

And since we are not folding either way, we have to estimate, guess, or "read" what line has an higher EV. There are guys in my games who might read the maniac as FOS and call even lighter, old or not and pro or not, that's read dependent. But it might be a good read that most UTG old regs won't make it 25 to go with less than AK.

~90bbs with a set, on a super wet broadway board? It's going in on the flop every time.

Also, flatting pre is fine. I'm never 3!/folding with your stack size, so if I do 3! it's with the intention of calling it off. Against a UTG open from the described V, flatting pre would be my default here.

Hero jams and scoops the pot 70% of the time.

I like the flat preflop. When a solid players opens 5x UTG on a 10-handed table, he's repping a pretty tight range, something like {88+, AQ+, AJs, KQs}, so it makes sense to flat with TT against a range that strong. Being IP is more reason to flat.

Flop is an easy shove as played. We beat a plethora of pair+draw hands, as well as 2pr hands. I'd expect to be good around 60-70% of the time here, even with the action.

Not sure there's much debate here, GII.

Or, he could just call the 190 all-in & not have to pull back the rest of his stack.

UTG has us covered brainiac.

Can't fold a set for 80bb, easy shove

Grunching ... there are 9 combos of AK vs. 6 of KK+. Tough luck if SoS. UTG may even have AQ with a gutter.