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Facing a Raise

Big Blind Defense vs LoJack Open — GTO 6-Max Cash

Facing a 2.5bb open from the LoJack, GTO defends the Big Blind with about 28% of hands — roughly 21% as a flat call and 6% as a 3-bet. Everything else folds. The grid below shows the exact response.
28%
Defend
21%
Call
6%
3-Bet
Jam 3-bet Call Fold Partial fill = mixed frequency

Crafty Penguin GTO solver · 6-max cash (NL500) · 100bb · vs 2.5bb open · updated Jul 28, 2026

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Defending Big Blind vs a LoJack open

The Big Blind is closing the action here — everyone has folded to the LoJack's raise, and you're deciding whether to fold, flat, or 3-bet. Against a 2.5bb open you're getting a great price to continue, which is why the defend frequency (28%) is far wider than an opening range.

From the Big Blind you can flat wide (21% of hands) because you only have to call 2.5bb into a pot that already holds the small blind's dead money, and you close the action. Your 3-bet range (~6%) is the value hands plus some suited blockers as bluffs.

Read the grid by cell colour: teal is a jam, amber a 3-bet, blue a flat call, and the dark fill is fold. A split cell is a mixed frequency — the solver takes each action some percentage of the time. Drill the borderline hands at the edge of the defending range; that's where the EV is won or lost.

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