AA vs KJ: Preflop Equity & Odds
| Hand | Win | Tie | Equity |
|---|---|---|---|
| AA (Pocket Aces) | 85.4% | 0.4% | 85.6% |
| KJ (King-Jack) | 14.2% | 0.4% | 14.4% |
Suited vs offsuit: KJ
| Matchup | Win | Tie | Equity |
|---|---|---|---|
| KJs | 17.3% | 0.4% | 17.5% |
| KJo | 13.1% | 0.4% | 13.3% |
How AA vs KJ unfolds by street
Pocket Aces (AA) is still ahead on 96% of flops against KJ, and the lead survives to the turn on 91%. KJ takes the lead on the other 4% of flops. These figures come from full board enumeration, not a simulation.
| Street | AA still ahead | KJ flipped the lead |
|---|---|---|
| Flop | 96% | 4% |
| Turn | 91% | 9% |
AA vs KJ is about as good as a non-cooler gets for the pair: both of KJ's cards are undercards, so no single card flips the lead. AA wins 85.4%, KJ wins 14.2%, and 0.4% of boards chop. The underdog has to pair twice, make a straight or flush, or otherwise back in — which is why pairs stack undercards so reliably at a 6.0-to-1 clip.
Translate that into a decision and it's simple pot-odds math: counting split pots as half, AA carries 85.6% equity and KJ 14.4%. Against a pot-sized shove you need about 33% to call and about 25% versus a half-pot bet — so KJ needs real fold equity, not just its raw share, to justify stacking off.
How you play AA vs KJ depends on which side you hold. With AA you're not crushing, so keep the pot controllable and take the 85.4% edge to showdown when you can; with KJ, your equity is enough to continue with initiative but thin enough that bloating the pot out of position is a trap.
AA vs KJ FAQ
Who wins AA vs KJ preflop?
AA (Pocket Aces) is the favorite, winning 85.4% of all runouts, while KJ (King-Jack) wins 14.2%. The remaining 0.4% are split pots. Counting splits as half, AA's preflop equity is 85.6%.
How often does KJ beat AA?
KJ wins 14.2% of the time all-in preflop against AA — roughly 1 in 7 — so it needs good pot odds or fold equity to get the money in profitably.
Is AA vs KJ a good spot to get all-in?
For AA, yes — a 85.6% favorite should happily commit, especially with fold equity. For KJ at 14.4%, 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 KJ after the flop?
AA is still ahead on 96% of flops and stays ahead through the turn on 91% of boards; KJ takes the lead on the other 4% of flops. These are exact figures from full board enumeration.
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