progressBB defense vs HJ open at 70 BB
8-max MTT · ante 12.5 % · Hijack opens, small blind folds · chip EV
How the BB defends at 70 BB
Facing a Hijack open to 2.1 BB (small blind folds) with 70 big blinds, the big blind folds only 28% of hands, calls 62%, 3-bets to 10 BB with 10% and goes all-in with 0.2%. The big blind already has one blind in the pot and closes the action, so it gets a good price.
Always 3-bet: AA, AKs, AKo, AQs, AQo, AJs, KK, KQs, QQ, JJ, TT, 99.
Folded: K3o, K2o, Q7o, Q6o, Q5o, Q4o, Q3o, Q2o, J5o, J4o, J3o, J2o and 14 more.
Against other openers at 70 BB the big blind continues with: vs BTN 71%, vs CO 73%, vs LJ 71%, vs UTG+1 68%, vs UTG 66%. The defence does not simply grow with the position of the opener here; the exact chart for each opener matters.
Closest decisions (the book continues with them only part of the time): K5o 46%, T6o 42%, 63o 42%, 74o 64%, 52o 30%. These are the hands worth drilling, because a small change in the opponents or the stack flips them.
What changes around 70 BB
The book continues with 72% of hands here, 77% at 60 BB and 73% at 80 BB. These leave it: K5o, K4o, J6o, T6o, 63o, 52o.
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Numbers come from the progressGTO solution book (v14, chip EV, 8-max, ante 12.5 %): our own equilibrium computation with a modelled postflop. It is an approximation, not an exact solution, and it keeps improving. Hover or tap a hand to see its exact frequencies.
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