AA vs A2s: Preflop Equity & Odds
| Hand | Win | Tie | Equity |
|---|---|---|---|
| AA (Pocket Aces) | 87.2% | 1.3% | 87.9% |
| A2s (Ace-Deuce Suited) | 11.5% | 1.3% | 12.1% |
How AA vs A2s unfolds by street
Pocket Aces (AA) is still ahead on 98% of flops against A2s, and the lead survives to the turn on 94%. A2s takes the lead on the other 2% of flops, almost always by flopping a set. These figures come from full board enumeration, not a simulation.
| Street | AA still ahead | A2s flipped the lead |
|---|---|---|
| Flop | 98% | 2% |
| Turn | 94% | 6% |
AA vs A2s is a card-removal spot: the pair holds one of the cards the unpaired hand most wants. AA wins 87.2%, A2s wins 11.5%, and 1.3% of boards chop. Blocking an out (and vice versa) pushes the favorite past a clean race — it's one of the most common all-in confrontations you'll actually face.
Think in variance terms: 87.9% equity means AA loses this all-in nearly 12 times in 100, so even a "dominant" spot is a coin you'll see come up tails plenty. Getting it in as the 87.9% favorite is correct every time; the 12.1% that goes the other way is math, not a misplay.
In practice, AA vs A2s rewards aggression from the favorite and caution from the dog: AA wants to realize its 87.2% edge by getting value and denying free cards, while A2s should lean on fold equity and position rather than hoping to win the pot at showdown about 1 time in 9.
AA vs A2s FAQ
Who wins AA vs A2s preflop?
AA (Pocket Aces) is the favorite, winning 87.2% of all runouts, while A2s (Ace-Deuce Suited) wins 11.5%. The remaining 1.3% are split pots. Counting splits as half, AA's preflop equity is 87.9%.
How often does A2s beat AA?
A2s wins 11.5% of the time all-in preflop against AA — roughly 1 in 9 — so it needs good pot odds or fold equity to get the money in profitably.
Is AA vs A2s a good spot to get all-in?
For AA, yes — a 87.9% favorite should happily commit, especially with fold equity. For A2s at 12.1%, it depends on the price: enough to continue with initiative, but thin enough that stacking off out of position is usually a leak.
Does AA hold up against A2s after the flop?
AA is still ahead on 98% of flops and stays ahead through the turn on 94% of boards; A2s takes the lead on the other 2% of flops. These are exact figures from full board enumeration.
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