77 vs a button opening range: Equity & Strategy
Pocket Sevens (77) has 58.1% equity all-in preflop against a button opening range — 586 combos, 44.2% of all starting hands. It wins 57.7% of runouts outright, loses 41.4% 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 |
|---|---|---|---|
| 77 | 57.7% | 0.9% | 58.1% |
| a button opening range | 41.4% | 0.9% | 41.9% |
The range this is computed against
The button is the widest legitimate opening range in poker — guaranteed position for the rest of the hand and only two blinds left to act, so close to 45% of all hands open profitably: every pair, every suited ace and king, most suited queens and jacks, all the suited connectors and gappers, and offsuit aces all the way down to A2o.
BTN open — 586 combos, 44.2% 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, K4s, K3s, K2s, QJs, QTs, Q9s, Q8s, Q7s, Q6s, Q5s, Q4s, Q3s, Q2s, JTs, J9s, J8s, J7s, T9s, T8s, T7s, T6s, 98s, 97s, 96s, 95s, 87s, 86s, 85s, 76s, 75s, 74s, 65s, 64s, 63s, 54s, 53s, 52s, 43s, AKo, AQo, AJo, ATo, A9o, A8o, A7o, A6o, A5o, A4o, A3o, A2o, KQo, KJo, KTo, K9o, QJo, QTo, Q9o, JTo, J9o, T9o, 98o
After card removal, 555 of those 586 combos are still available (31 are blocked by the cards 77 holds). 77 is ahead of 500 and behind 55.
Hardest parts of the range for 77
| Hand | Combos | 77 equity |
|---|---|---|
| 88 | 6 | 18.2% |
| 99 | 6 | 18.4% |
| TT | 6 | 18.8% |
| 6 | 19.1% | |
| JJ | 6 | 19.1% |
Easiest parts of the range for 77
| Hand | Combos | 77 equity |
|---|---|---|
| 74s | 2 | 84.7% |
| 75s | 2 | 83.0% |
| 63s | 4 | 82.3% |
| 22 | 6 | 81.9% |
| 64s | 4 | 81.8% |
Against a button opening range (586 combos, 44.2% of all hands), 77 runs at 58.1%. It wins 57.7% of runouts outright, loses 41.4% and splits the remaining 0.9%. Your own two cards remove 31 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 500 of the 555 combos you can still be facing (90%), which is what a 58.1% number actually looks like hand by hand.
Where does the range come from? The button is the widest legitimate opening range in poker — guaranteed position for the rest of the hand and only two blinds left to act, so close to 45% of all hands open profitably: every pair, every suited ace and king, most suited queens and jacks, all the suited connectors and gappers, and offsuit aces all the way down to A2o. Broken down hand by hand, 77 does worst against 88 (18.2%), 99 (18.4%) and TT (18.8%) and best against 74s (84.7%), 75s (83.0%) and 63s (82.3%). Across the whole range 77's equity swings from 18.2% at the bottom to 84.7% at the top — the single 58.1% headline is the combo-weighted average of all of it.
Facing a button opening range, 58.1% is a raise-or-fold number, not a call-and-see number: 77 is in front of the average opener but not by enough to want a bloated pot out of position. Against 44.2% of hands, you are priced in against a pot-sized bet (which needs about 33%).
77 vs BTN open FAQ
What is 77's equity against a button opening range?
77 has 58.1% equity all-in preflop against a button opening range — it wins 57.7% of runouts outright, loses 41.4% and chops 0.9%. The range holds 586 combos (44.2% of all hands); 77 blocks 31 of them, leaving 555 live. This is exact full board enumeration, not a simulation.
Which hands in a button opening range beat 77?
77 is behind 55 of the 555 live combos and ahead of the other 500. The worst matchups are 88 (18.2%), 99 (18.4%) and TT (18.8%); its best are 74s (84.7%), 75s (83.0%) and 63s (82.3%). Every figure is exact, computed against that hand's unblocked combos only.
What hands are in a button opening range?
94 hand classes and 586 combos — 44.2% of the 1,326 possible starting hands. By combo count it is 13% pocket pairs (13 pairs, 78 combos), 40% suited hands (58 classes, 232 combos) and 47% offsuit hands (23 classes, 276 combos). That shape is why 77 runs at 58.1% against it rather than against a random hand.
Does 77 do better against a wider or a tighter range?
Wider, almost always. 77 has 58.3% equity against a loose-passive calling range (50.5% of hands) but 41.5% 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 · 77 vs 3bet-value · 77 vs 4bet-range · 77 vs calling-station · aa vs utg-open · aa vs mp-open · aa vs co-open