99 vs A2s: Odds & Interactive Calculator
| Hand | Win | Tie | Equity |
|---|---|---|---|
| 99 (Pocket Nines) | 66.7% | 0.4% | 66.9% |
| A2s (Ace-Deuce Suited) | 32.9% | 0.4% | 33.1% |
How 99 vs A2s unfolds by street
Pocket Nines (99) is still ahead on 80% of flops against A2s, and the lead survives to the turn on 75%. A2s takes the lead on the other 20% of flops. These figures come from full board enumeration, not a simulation.
| Street | 99 still ahead | A2s flipped the lead |
|---|---|---|
| Flop | 80% | 20% |
| Turn | 75% | 25% |
99 vs A2s is a lopsided race — only one of A2s's cards is an overcard to the pair. 99 wins 66.7%, A2s wins 32.9%, and 0.4% of boards chop. With roughly half the outs of a true two-overcard flip, A2s is a clear 2.0-to-1 dog that usually needs to pair its live card (or find a sneaky straight/two-pair runout) to win.
Think in variance terms: 66.9% equity means 99 loses this all-in nearly 33 times in 100, so even a "dominant" spot is a coin you'll see come up tails plenty. Getting it in as the 66.9% favorite is correct every time; the 33.1% that goes the other way is math, not a misplay.
In practice, 99 vs A2s rewards aggression from the favorite and caution from the dog: 99 wants to realize its 66.7% 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 3.
99 vs A2s FAQ
Who wins 99 vs A2s preflop?
99 (Pocket Nines) is the favorite, winning 66.7% of all runouts, while A2s (Ace-Deuce Suited) wins 32.9%. The remaining 0.4% are split pots. Counting splits as half, 99's preflop equity is 66.9%.
Does the 99 vs A2s probability change all-in preflop?
No. Once both hands are all-in preflop the odds are set by the cards alone — position, stack size and who bet first change nothing. The only thing that moves the number is suits: 99's equity runs from 66.6% to 67.2% depending on how many suits the two hands share, which is why different sites quote slightly different figures. It does change once board cards are dealt (99 leads on 80% of flops) and in multiway pots, where every extra caller takes equity from both hands.
Is 99 vs A2s a good spot to get all-in?
For 99, yes — a 66.9% favorite should happily commit, especially with fold equity. For A2s at 33.1%, it depends on the price: enough to continue with initiative, but thin enough that stacking off out of position is usually a leak.
Does 99 hold up against A2s after the flop?
99 is still ahead on 80% of flops and stays ahead through the turn on 75% of boards; A2s takes the lead on the other 20% of flops. These are exact figures from full board enumeration.
Run any matchup in the free equity calculator · KK VS AQ · KK VS AJ · QQ VS AJ · QQ VS KJ · KK VS AT · QQ VS AT
99 against a range
All-in against one known hand is the textbook case; at the table 99 is usually up against a range. Exact equities, computed over every combo with card removal applied:
- 99 vs calling station — 64.9% against 670 combos (50.5% of hands)
- 99 vs BTN open — 64.0% against 586 combos (44.2% of hands)
- 99 vs CO open — 60.4% against 366 combos (27.6% of hands)
- 99 vs 10bb shove — 60.4% against 334 combos (25.2% of hands)