Spew on river? I was seated at this table 4 hands ago so unfortunately no information on villain.

PokerStars - 100/200 Ante 20 NL - Holdem - 9 players
Hand converted by PokerTracker 4

SB: 6.07 BB
BB: 17.79 BB
UTG: 28.09 BB
UTG+1: 19.33 BB
MP: 11.64 BB
MP+1: 26.31 BB
MP+2: 7.38 BB
CO: 13.15 BB
Hero (BTN): 21.77 BB

9 players post ante of 0.1 BB, SB posts SB 0.5 BB, BB posts BB 1 BB

Pre Flop: (pot: 2.4 BB) Hero has A J

fold, fold, fold, MP+1 calls 1 BB, fold, fold, Hero raises to 3.12 BB, fold, fold, MP+1 calls 2.12 BB

Flop: (8.65 BB, 2 players) J A T
MP+1 checks, Hero bets 6 BB, MP+1 calls 6 BB

Turn: (20.65 BB, 2 players) K
MP+1 checks, Hero checks

River: (20.65 BB, 2 players) 7
MP+1 bets 10 BB, Hero raises to 12.54 BB and is all-in, MP+1 calls 2.54 BB

Hero shows A J (Two Pair, Aces and Jacks)
(Pre 62%, Flop 18%, Turn 13%)
MP+1 shows Q K (Straight, Ace High)
(Pre 38%, Flop 82%, Turn 88%)
MP+1 wins 45.74 BB

I would jam pre vs one limper. You are short stack and collecting 3.5bb with AJ without a showdown is a pretty good deal

Don't show results.

I might jam preflop too but raising isn't bad. No reason to bet so large on the flop, though. You have the range and nut advantage on that flop because MP limp/calling ranges won't often hit that flop hard.

Turn card is pretty bad and his x/c of your large bet is concerning. He would dump all his lower pairs and random stuff that missed, so his range will be heavily weighted towards weak Aces (especially suited ones) and other hands that got a piece of the board. We can eliminate AK, QQ and sets given his open limp pre, and discount KQ/KJ too. That leaves hands like KT/JT/J9/QT/QJ to go along with a bunch of Axs.

I like the turn check because there isn't much value in betting anymore. That's a scare card for most of his range you beat, and he's now pulled ahead with his Qx stuff.

The river bet basically puts you all in so it's an equity decision. How many hands are in his range that you beat and would effectively shove the river here? Are there enough of them to give you the equity to call?

When the board hits your range harder you want to bet bigger. When you have range advantage from preflop you want to bet at higher frequencies. But regardless flop is too big anyways.

River is such a trivial fold.

This. Nothing to add to this fine reasoning.

And this too !

This +1

You're mixing up two different concepts:

1) When you have the range advantage, you should be betting more often but smaller. That's why small continuation bets have become so common.

2) When you have a polarized range you want to bet larger. However, this concept applies more to later streets than the flop because ranges tend to be more converged on the flop.

A polarized range isn't the same thing as the board hitting your range harder. I'm not mixing anything up tho.

When you have range advantage you bet more and evaluate the board for your sizing.

I'm not discussing a polarized range here.