progressBB defense vs BTN open at 60 BB
8-max MTT · ante 12.5 % · Button opens, small blind folds · chip EV
How the BB defends at 60 BB
Facing a Button open to 2.1 BB (small blind folds) with 60 big blinds, the big blind folds only 13% of hands, calls 67%, 3-bets to 10 BB with 20% and goes all-in with 0.1%. 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, AJo, ATs, ATo, A6o, KK, KQs, KQo, QQ and 5 more.
Folded: Q3o, Q2o, T3o, T2o, 94o, 93o, 92o, 84o, 83o, 82o, 73o, 72o and 1 more.
Against other openers at 60 BB the big blind continues with: vs CO 77%, vs HJ 77%, vs LJ 74%, vs UTG+1 73%, vs UTG 70%. The later the opener, the wider its range, and the more the big blind defends.
Closest decisions (the book continues with them only part of the time): Q4o 44%, T4o 58%, 52o 62%. These are the hands worth drilling, because a small change in the opponents or the stack flips them.
What changes around 60 BB
The book continues with 87% of hands here, 87% at 55 BB and 71% at 70 BB. Going from 55 BB to 60 BB, no hand crosses the 50% line; only the frequencies shift.
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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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