ATs vs a cutoff opening range: Equity & Strategy
Ace-Ten Suited (ATs) has 55.8% equity all-in preflop against a cutoff opening range — 366 combos, 27.6% of all starting hands. It wins 53.3% of runouts outright, loses 41.6% and chops 5.0%. These are exact figures from full board enumeration against every unblocked combo in the range, not a simulation.
| Side | Win | Chop | Equity |
|---|---|---|---|
| ATs | 53.3% | 5.0% | 55.8% |
| a cutoff opening range | 41.6% | 5.0% | 44.2% |
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, 315 of those 366 combos are still available (51 are blocked by the cards ATs holds). ATs is ahead of 216 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% |
| A9o | 9 | 73.2% |
| A8o | 9 | 72.9% |
| JTo | 9 | 72.3% |
| KTs | 3 | 71.1% |
ATs has 55.8% equity all-in preflop against a cutoff opening range — 366 combos, 27.6% of all hands. Ace-Ten Suited wins the pot outright 53.3% of the time, loses 41.6% and chops 5.0%. Your own two cards remove 51 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 216 of the 315 combos you can still be facing (69%), which is what a 55.8% 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 ATs most are AA (13.3%), AKs (29.3%) and AQs (29.5%); the ones you want to see are KTo (75.3%), A9o (73.2%) and A8o (72.9%). Across the whole range ATs's equity swings from 13.3% at the bottom to 75.3% at the top — the single 55.8% headline is the combo-weighted average of all of it.
Facing a cutoff opening range, 55.8% 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 27.6% of hands, you are priced in against a pot-sized bet (which needs about 33%).
ATs vs CO open FAQ
What is ATs's equity against a cutoff opening range?
ATs has 55.8% equity all-in preflop against a cutoff opening range — it wins 53.3% of runouts outright, loses 41.6% and chops 5.0%. The range holds 366 combos (27.6% of all hands); ATs blocks 51 of them, leaving 315 live. This is exact full board enumeration, not a simulation.
Which hands in a cutoff opening range beat ATs?
ATs is behind 99 of the 315 live combos and ahead of the other 216. The worst matchups are AA (13.3%), AKs (29.3%) and AQs (29.5%); its best are KTo (75.3%), A9o (73.2%) and A8o (72.9%). 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 ATs runs at 55.8% 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