JJ vs a cutoff opening range: Equity & Strategy
Pocket Jacks (JJ) has 68.5% equity all-in preflop against a cutoff opening range — 366 combos, 27.6% of all starting hands. It wins 68.1% of runouts outright, loses 31.1% and chops 0.9%. These are exact figures from full board enumeration against every unblocked combo in the range, not a simulation.
| Side | Win | Chop | Equity |
|---|---|---|---|
| JJ | 68.1% | 0.9% | 68.5% |
| a cutoff opening range | 31.1% | 0.9% | 31.5% |
The range this is computed against
The cutoff opens roughly a quarter of hands: all pairs and suited aces, suited kings down to K5s, every suited connector and one-gapper, and offsuit broadways down to A8o / KTo / QJo / JTo. Two players behind instead of five is worth more than ten percentage points of width.
CO open — 366 combos, 27.6% of all starting hands: AA, KK, QQ, JJ, TT, 99, 88, 77, 66, 55, 44, 33, 22, AKs, AQs, AJs, ATs, A9s, A8s, A7s, A6s, A5s, A4s, A3s, A2s, KQs, KJs, KTs, K9s, K8s, K7s, K6s, K5s, QJs, QTs, Q9s, Q8s, JTs, J9s, J8s, T9s, T8s, T7s, 98s, 97s, 87s, 86s, 76s, 75s, 65s, 64s, 54s, AKo, AQo, AJo, ATo, A9o, A8o, KQo, KJo, KTo, QJo, JTo
After card removal, 325 of those 366 combos are still available (41 are blocked by the cards JJ holds). JJ is ahead of 306 and behind 19.
Hardest parts of the range for JJ
| Hand | Combos | JJ equity |
|---|---|---|
| 6 | 18.0% | |
| KK | 6 | 18.5% |
| AA | 6 | 18.9% |
| JJ | 1 | 50.0% |
| KQs | 4 | 53.7% |
Easiest parts of the range for JJ
| Hand | Combos | JJ equity |
|---|---|---|
| JTo | 6 | 87.0% |
| J8s | 2 | 85.3% |
| J9s | 2 | 83.9% |
| JTs | 2 | 82.2% |
| TT | 6 | 82.0% |
JJ has 68.5% equity all-in preflop against a cutoff opening range — 366 combos, 27.6% of all hands. Pocket Jacks wins the pot outright 68.1% of the time, loses 31.1% and chops 0.9%. Your own two cards remove 41 of those combos before the flop is even dealt — a blocker effect this number already accounts for, because every combo containing one of your exact cards is stripped out of the range first. You are ahead of 306 of the 325 combos you can still be facing (94%), which is what a 68.5% number actually looks like hand by hand.
The cutoff opens roughly a quarter of hands: all pairs and suited aces, suited kings down to K5s, every suited connector and one-gapper, and offsuit broadways down to A8o / KTo / QJo / JTo. Two players behind instead of five is worth more than ten percentage points of width. Inside that range, the combos that hurt JJ most are QQ (18.0%), KK (18.5%) and AA (18.9%); the ones you want to see are JTo (87.0%), J8s (85.3%) and J9s (83.9%). Across the whole range JJ's equity swings from 18.0% at the bottom to 87.0% at the top — the single 68.5% headline is the combo-weighted average of all of it.
Facing a cutoff opening range, 68.5% is a raise-or-fold number, not a call-and-see number: JJ is in front of the average opener but not by enough to want a bloated pot out of position. Against 27.6% of hands, you are priced in against a pot-sized bet (which needs about 33%).
JJ vs CO open FAQ
What is JJ's equity against a cutoff opening range?
JJ has 68.5% equity all-in preflop against a cutoff opening range — it wins 68.1% of runouts outright, loses 31.1% and chops 0.9%. The range holds 366 combos (27.6% of all hands); JJ blocks 41 of them, leaving 325 live. This is exact full board enumeration, not a simulation.
Which hands in a cutoff opening range beat JJ?
JJ is behind 19 of the 325 live combos and ahead of the other 306. The worst matchups are QQ (18.0%), KK (18.5%) and AA (18.9%); its best are JTo (87.0%), J8s (85.3%) and J9s (83.9%). Every figure is exact, computed against that hand's unblocked combos only.
What hands are in a cutoff opening range?
63 hand classes and 366 combos — 27.6% of the 1,326 possible starting hands. By combo count it is 21% pocket pairs (13 pairs, 78 combos), 43% suited hands (39 classes, 156 combos) and 36% offsuit hands (11 classes, 132 combos). That shape is why JJ runs at 68.5% against it rather than against a random hand.
Does JJ do better against a wider or a tighter range?
Wider, almost always. JJ has 71.9% equity against a loose-passive calling range (50.5% of hands) but 42.0% against a 4-betting range (3.2%). Equity against a range is mostly a question of how many weak hands the range still contains — which is why the same holding can be a monster against a button open and a fold against a 4-bet.
Run any hand vs range in the free equity calculator · All hand-vs-range matchups · jj vs 3bet-value · jj vs 3bet-bluff · jj vs 4bet-range · aa vs utg-open · aa vs mp-open · aa vs co-open