AA vs A3s: Preflop Equity & Odds
| Hand | Win | Tie | Equity |
|---|---|---|---|
| AA (Pocket Aces) | 86.8% | 1.3% | 87.5% |
| A3s (Ace-Three Suited) | 11.9% | 1.3% | 12.5% |
How AA vs A3s unfolds by street
Pocket Aces (AA) is still ahead on 98% of flops against A3s, and the lead survives to the turn on 94%. A3s 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 | A3s flipped the lead |
|---|---|---|
| Flop | 98% | 2% |
| Turn | 94% | 6% |
AA vs A3s mixes a pair with an overlapping overcard, so an out on each side is already in someone's hand. AA wins 86.8%, A3s wins 11.9%, and 1.3% of boards chop. That blocking effect is why AA is a firmer 7.3-to-1 favorite than a straight pair-vs-two-overcards race.
Here's the intuition behind 87.5% to 12.5%: AA wins roughly 7 of every 8 times the chips go in, but the underdog cashing 12.5% of the time is exactly why you can't slow-play and let it draw for free.
How you play AA vs A3s depends on which side you hold. With AA you're not crushing, so keep the pot controllable and take the 86.8% edge to showdown when you can; with A3s, your equity is enough to continue with initiative but thin enough that bloating the pot out of position is a trap.
AA vs A3s FAQ
Who wins AA vs A3s preflop?
AA (Pocket Aces) is the favorite, winning 86.8% of all runouts, while A3s (Ace-Three Suited) wins 11.9%. The remaining 1.3% are split pots. Counting splits as half, AA's preflop equity is 87.5%.
How often does A3s beat AA?
A3s wins 11.9% of the time all-in preflop against AA — roughly 1 in 8 — so it needs good pot odds or fold equity to get the money in profitably.
Is AA vs A3s a good spot to get all-in?
For AA, yes — a 87.5% favorite should happily commit, especially with fold equity. For A3s at 12.5%, 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 A3s after the flop?
AA is still ahead on 98% of flops and stays ahead through the turn on 94% of boards; A3s takes the lead on the other 2% of flops. These are exact figures from full board enumeration.
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