ATs vs a button opening range: Equity & Strategy
Ace-Ten Suited (ATs) has 60.3% equity all-in preflop against a button opening range — 586 combos, 44.2% of all starting hands. It wins 58.1% of runouts outright, loses 37.5% and chops 4.4%. These are exact figures from full board enumeration against every unblocked combo in the range, not a simulation.
| Side | Win | Chop | Equity |
|---|---|---|---|
| ATs | 58.1% | 4.4% | 60.3% |
| a button opening range | 37.5% | 4.4% | 39.7% |
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, 510 of those 586 combos are still available (76 are blocked by the cards ATs holds). ATs is ahead of 411 and behind 99.
Hardest parts of the range for ATs
| Hand | Combos | ATs equity |
|---|---|---|
| AA | 3 | 13.3% |
| AKs | 3 | 29.3% |
| AQs | 3 | 29.5% |
| AJs | 3 | 30.1% |
| AKo | 9 | 30.5% |
Easiest parts of the range for ATs
| Hand | Combos | ATs equity |
|---|---|---|
| KTo | 9 | 75.3% |
| QTo | 9 | 73.8% |
| A9o | 9 | 73.2% |
| T9o | 9 | 73.1% |
| A8o | 9 | 72.9% |
Against a button opening range (586 combos, 44.2% of all hands), ATs runs at 60.3%. It wins 58.1% of runouts outright, loses 37.5% and splits the remaining 4.4%. Your own two cards remove 76 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 411 of the 510 combos you can still be facing (81%), which is what a 60.3% number actually looks like hand by hand.
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. Inside that range, the combos that hurt ATs most are AA (13.3%), AKs (29.3%) and AQs (29.5%); the ones you want to see are KTo (75.3%), QTo (73.8%) and A9o (73.2%). Across the whole range ATs's equity swings from 13.3% at the bottom to 75.3% at the top — the single 60.3% headline is the combo-weighted average of all of it.
Facing a button opening range, 60.3% is a raise-or-fold number, not a call-and-see number: ATs 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%).
ATs vs BTN open FAQ
What is ATs's equity against a button opening range?
ATs has 60.3% equity all-in preflop against a button opening range — it wins 58.1% of runouts outright, loses 37.5% and chops 4.4%. The range holds 586 combos (44.2% of all hands); ATs blocks 76 of them, leaving 510 live. This is exact full board enumeration, not a simulation.
Which hands in a button opening range beat ATs?
ATs is behind 99 of the 510 live combos and ahead of the other 411. The worst matchups are AA (13.3%), AKs (29.3%) and AQs (29.5%); its best are KTo (75.3%), QTo (73.8%) and A9o (73.2%). 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 ATs runs at 60.3% against it rather than against a random hand.
Does ATs do better against a wider or a tighter range?
Wider, almost always. ATs has 61.1% equity against a loose-passive calling range (50.5% of hands) but 36.3% 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 · ats vs 3bet-value · ats vs 4bet-range · ats vs calling-station · aa vs utg-open · aa vs mp-open · aa vs co-open