AA vs 99: Preflop Equity & Odds
| Hand | Win | Tie | Equity |
|---|---|---|---|
| AA (Pocket Aces) | 80.7% | 0.4% | 80.9% |
| 99 (Pocket Nines) | 19.0% | 0.4% | 19.1% |
How AA vs 99 unfolds by street
Pocket Aces (AA) is still ahead on 89% of flops against 99, and the lead survives to the turn on 85%. 99 takes the lead on the other 11% of flops, almost always by flopping a set. These figures come from full board enumeration, not a simulation.
| Street | AA still ahead | 99 flipped the lead |
|---|---|---|
| Flop | 89% | 11% |
| Turn | 85% | 15% |
AA vs 99 is a pair-over-pair cooler — the kind of all-in nobody at the table can fold. AA wins 80.7%, 99 wins 19.0%, and 0.4% of boards chop, a 4.2-to-1 edge for AA. The lower pair, 99, is drawing to the two cards left in the deck that make it a set; miss those and only a runner-runner straight or flush saves it, which is why it gets there just 1 time in 5.
Think in variance terms: 80.9% equity means AA loses this all-in nearly 19 times in 100, so even a "dominant" spot is a coin you'll see come up tails plenty. Getting it in as the 80.9% favorite is correct every time; the 19.1% that goes the other way is math, not a misplay.
As the bigger pair, AA, your whole job is to get the money in before a scare card — there's no fold here and slow-playing only lets 99 realize its set equity for free. As the smaller pair, the discipline is recognizing when stacks are deep enough that calling off 19.0% equity is a leak, even though folding pre feels impossible.
AA vs 99 FAQ
Who wins AA vs 99 preflop?
AA (Pocket Aces) is the favorite, winning 80.7% of all runouts, while 99 (Pocket Nines) wins 19.0%. The remaining 0.4% are split pots. Counting splits as half, AA's preflop equity is 80.9%.
How often does 99 beat AA?
99 wins 19.0% of the time all-in preflop against AA — roughly 1 in 5 — so it needs good pot odds or fold equity to get the money in profitably.
Can you fold the smaller pair in AA vs 99?
Almost never preflop all-in — but the 19.0% the smaller pair wins (about 1 in 5) means that when stacks are very deep and the action screams a bigger pair, laying it down is a real, if rare, fold. Set-mining the lower pair works only with the implied odds to win a full stack when you spike.
Does AA hold up against 99 after the flop?
AA is still ahead on 89% of flops and stays ahead through the turn on 85% of boards; 99 takes the lead on the other 11% of flops. These are exact figures from full board enumeration.
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