99 vs A5s: Preflop Equity & Odds
| Hand | Win | Tie | Equity |
|---|---|---|---|
| 99 (Pocket Nines) | 65.8% | 0.4% | 66.0% |
| A5s (Ace-Five Suited) | 33.8% | 0.4% | 34.0% |
How 99 vs A5s unfolds by street
Pocket Nines (99) is still ahead on 80% of flops against A5s, and the lead survives to the turn on 74%. A5s takes the lead on the other 20% of flops. These figures come from full board enumeration, not a simulation.
| Street | 99 still ahead | A5s flipped the lead |
|---|---|---|
| Flop | 80% | 20% |
| Turn | 74% | 26% |
99 vs A5s is a lopsided race — only one of A5s's cards is an overcard to the pair. 99 wins 65.8%, A5s wins 33.8%, and 0.4% of boards chop. With roughly half the outs of a true two-overcard flip, A5s is a clear 1.9-to-1 dog that usually needs to pair its live card (or find a sneaky straight/two-pair runout) to win.
Translate that into a decision and it's simple pot-odds math: counting split pots as half, 99 carries 66.0% equity and A5s 34.0%. Against a pot-sized shove you need about 33% to call and about 25% versus a half-pot bet — so A5s is comfortably priced in to get it all-in here.
How you play 99 vs A5s depends on which side you hold. With 99 you're not crushing, so keep the pot controllable and take the 65.8% edge to showdown when you can; with A5s, your equity is enough to continue with initiative but thin enough that bloating the pot out of position is a trap.
99 vs A5s FAQ
Who wins 99 vs A5s preflop?
99 (Pocket Nines) is the favorite, winning 65.8% of all runouts, while A5s (Ace-Five Suited) wins 33.8%. The remaining 0.4% are split pots. Counting splits as half, 99's preflop equity is 66.0%.
How often does A5s beat 99?
A5s wins 33.8% of the time all-in preflop against 99 — a genuine underdog, but with enough live outs (about 1 in 3) that the matchup is closer than the favorite would like.
Is 99 vs A5s a good spot to get all-in?
For 99, yes — a 66.0% favorite should happily commit, especially with fold equity. For A5s at 34.0%, 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 A5s after the flop?
99 is still ahead on 80% of flops and stays ahead through the turn on 74% of boards; A5s takes the lead on the other 20% of flops. These are exact figures from full board enumeration.
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