KK vs A2s: Preflop Equity & Odds
| Hand | Win | Tie | Equity |
|---|---|---|---|
| KK (Pocket Kings) | 67.5% | 0.5% | 67.8% |
| A2s (Ace-Deuce Suited) | 32.0% | 0.5% | 32.2% |
How KK vs A2s unfolds by street
Pocket Kings (KK) is still ahead on 81% of flops against A2s, and the lead survives to the turn on 75%. A2s takes the lead on the other 19% of flops. These figures come from full board enumeration, not a simulation.
| Street | KK still ahead | A2s flipped the lead |
|---|---|---|
| Flop | 81% | 19% |
| Turn | 75% | 25% |
KK vs A2s is a lopsided race — only one of A2s's cards is an overcard to the pair. KK wins 67.5%, A2s wins 32.0%, and 0.5% of boards chop. With roughly half the outs of a true two-overcard flip, A2s is a clear 2.1-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: 67.8% equity means KK loses this all-in nearly 32 times in 100, so even a "dominant" spot is a coin you'll see come up tails plenty. Getting it in as the 67.8% favorite is correct every time; the 32.2% that goes the other way is math, not a misplay.
In practice, KK vs A2s rewards aggression from the favorite and caution from the dog: KK wants to realize its 67.5% 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.
KK vs A2s FAQ
Who wins KK vs A2s preflop?
KK (Pocket Kings) is the favorite, winning 67.5% of all runouts, while A2s (Ace-Deuce Suited) wins 32.0%. The remaining 0.5% are split pots. Counting splits as half, KK's preflop equity is 67.8%.
How often does A2s beat KK?
A2s wins 32.0% of the time all-in preflop against KK — a genuine underdog, but with enough live outs (about 1 in 3) that the matchup is closer than the favorite would like.
Is KK vs A2s a good spot to get all-in?
For KK, yes — a 67.8% favorite should happily commit, especially with fold equity. For A2s at 32.2%, it depends on the price: enough to continue with initiative, but thin enough that stacking off out of position is usually a leak.
Does KK hold up against A2s after the flop?
KK is still ahead on 81% of flops and stays ahead through the turn on 75% of boards; A2s takes the lead on the other 19% of flops. These are exact figures from full board enumeration.
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