progressCO open range at 15 BB
8-max MTT · ante 12.5 % · folded to the Cutoff · chip EV
How CO opens at 15 BB
When the action folds to the Cutoff with 15 big blinds (8-max MTT with ante), the book plays 30% of hands: a raise to 2 BB with 19% and all-in with 11%. The other 70% fold.
Always raised: AA, AKs, AKo, AQs, AJs, ATs, A9s, A8s, A7s, A6s, A6o, A3s, A2s, KK and 21 more.
Always all-in: AQo, AJo, A9o, A7o, KQo, QTs, Q9s, JTs, J9s, T9s, 87s, 66, 44, 33, 22.
Mixed hands (the book splits them between actions): ATo, A8o, A5s, A5o, A4s, A4o, KJo, QJs, QJo, Q7s, 98s, 55.
At this depth the open is a small raise, with some hands going all-in directly.
Next to it at 15 BB: HJ 24%, BTN 39%. Seats closer to the button open more here, because fewer players are left to wake up with a big hand.
Closest decisions (the book opens them only part of the time): Q7s 52%. These are the hands worth drilling, because a small change in the opponents or the stack flips them.
What changes around 15 BB
The book opens 30% of hands here, 31% at 14 BB and 30% at 16 BB. Going from 14 BB to 15 BB, no hand crosses the 50% line; only the frequencies shift. With the extra chips some former all-ins become small raises: ATo, A6o, A5s, A5o, KQs, KJo and 5 more.
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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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