Starting Hand
How to Play J9o — Jack-Nine offsuit Preflop Strategy
6-Max Cash Opening (100bb)
How often GTO opens J9o first-in from each seat.
Short-Stack Jam Frequency
How often J9o is a first-in shove at short stacks (tournament).
| Stack | UTG | MP | LJ | HJ | CO | BTN | SB |
|---|---|---|---|---|---|---|---|
| 5bb | 0% | 0% | 0% | 0% | 100% | 100% | 100% |
| 8bb | 0% | 0% | 0% | 0% | 0% | 99% | 100% |
| 10bb | 0% | 0% | 0% | 0% | 0% | 0% | 100% |
| 12bb | 0% | 0% | 0% | 0% | 0% | 0% | 100% |
| 15bb | 0% | 0% | 0% | 0% | 0% | 0% | 100% |
| 20bb | 0% | 0% | 0% | 0% | 0% | 0% | 100% |
Generated from our solver database · 6-max cash (NL500) & MTT Chip-EV · updated Sep 5, 2026 · method
J9o head-to-head
Exact preflop equity against the hands it usually runs into.
Drill J9o from every seat, or take it to a flop
The table above is J9o preflop at fixed stacks. Drill it with every other hand until the right open is automatic, or put J9o on a board of your choosing and solve the postflop with your own sizes.
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Playing J9o preflop
Playable in late position — open from the Button onward and fold it from earlier seats. At 5bb it comes into the jamming range from 3 of the 7 seats — short stacks widen what's playable.
Position matters: from under-the-gun (LoJack) J9o opens 0% of the time, rising to 100% on the Button as fewer players are left to act behind you. The later you are, the wider you can open.
The common mistake with J9o is opening it from early position where the solver folds it. Respect the position threshold — it's an open from the Button onward, not before.
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