Monday, 18 February 2013

HH Review: Min 3-Bet Pot Mistake

February continues to go fairly well after 18k hands. I had a mini implosion weekend before last and ended up trying to force a lot of plays that were just not going to work and getting crushed by weird 2 pair after weird backdoor gutshot. That was an 18 buyin downswing over 4k hands. I've since recovered that and then some. I'm sitting at an overall winrate of 17.5 bb/100 on the month,  a third of that small stakes and the rest micros.

Something I never did on Stars was mix stakes. I just found it too confusing. With the lack of traffic on my new site, I'm finding it's much better for my winrate if I do mix in three or even four stakes for the highest fish ratio. It's interesting how I've started thinking more in terms of SPR than in $ or even in bb.


Villain in this hand is 32/14 with a 6% 3bet over 180 hands. All of his 3bets have been from the blinds.

$0.10/$0.25 No Limit Hold'em - 5 players

BTN: $15.66
Hero (SB): $25.16
BB: $15.16
UTG: $40.07
CO: $20.30

Pre Flop: ($0.35) Hero is SB with 7 of spades J of clubs
3 folds, Hero raises to $0.50, BB raises to $1.10, Hero calls $0.60

My min-steal is a bit marginal with J7o as he's a bit more aggressive than average postflop, but he does fold to 50% of flop cbets and 40% on the turn. He's also shown himself to be a bit spazzy a significant portion of the time. I spite call the near min-raise, but I think the math generally has me covered at potentially $16 profit for a $0.60 call giving me 27:1 stack odds. I'm going to hit 2 pair or better about 6% of the time and draws add a few points as well.

Flop: ($2.55) 7 of clubs 7 of hearts 4 of spades (2 players)
Hero checks, BB bets $1.65, Hero raises to $3.90, BB raises to $6.15, Hero raises to $17.85, BB folds

Jackpot flop. My concern now is how to best get my money in. He's a bit fishy so 6% is probably going to be top heavy with a range like 88+, AQ+. That means I have 95% equity trying to dodge the fullhouse spike. 55% of his range is overpairs, 45% is Ace high.

I was torn between getting all the money in on the flop fearing that calling could bring an action killing overcard like an Ace or King and would shut down 88-JJ. But at the same time, I'd prefer to let him spazz or hit with his Ace high hands. I picked a size slightly larger than a min-raise to give him room to play back with $12+ effective and an $8 pot to get me to fold a hand like 33 or 55 with his unpaired hands, with his overpairs obviously raising as well.

Once he clicks it back, he has almost $8 left. He has 71 combos, so lets break down each group of hands in his range:

  • 88-JJ (21): These likely shut down if an Ace or King hits the turn. They maybe shut down half the time if a Queen hits. Given that weighting and the likelihood of those cards hitting, I miss $8 on 20% of turn cards. There is a small chance he checks back a hand like 88 or 99, so lets say a conservative 25% when an Ace rolls off by the river.
  • QQ-AA (18): These will probably not shut down at all given a $15 pot with $8 left.
  • AQ-AK (32): These will generally fold to the flop shove. I'd say there's a 20% chance he spazzes out with them if checked to on the turn. He's going to hit a pair and stack off 24% of the time by either hitting the turn and shoving or checking back and hitting the river.

So my dilemma then is making the correct decision between:

  • Winning $8 that I would not have won 25% of the time x 30% of range (88-JJ). EV difference = +$0.60.
  • Winning $8 that I would not have won 38% of the time x 45% of range (AQ-AK). EV difference = +$1.37.

Clearly then, shoving the flop is a mistake.

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