AK vs JJ: Preflop Equity & Odds
| Hand | Win | Tie | Equity |
|---|---|---|---|
| AK (Ace-King) | 43.6% | 0.4% | 43.9% |
| JJ (Pocket Jacks) | 55.9% | 0.4% | 56.1% |
Suited vs offsuit: AK
| Matchup | Win | Tie | Equity |
|---|---|---|---|
| AKs | 45.8% | 0.4% | 46.0% |
| AKo | 42.9% | 0.4% | 43.1% |
How AK vs JJ unfolds by street
Pocket Jacks (JJ) is still ahead on 67% of flops against AK, and the lead survives to the turn on 62%. AK takes the lead on the other 33% of flops. These figures come from full board enumeration, not a simulation.
| Street | JJ still ahead | AK flipped the lead |
|---|---|---|
| Flop | 67% | 33% |
| Turn | 62% | 38% |
When a pair meets two bigger cards you get a flip, and AK vs JJ is exactly that: JJ wins 55.9%, AK wins 43.6%, and 0.4% of boards chop. The overcards lean on six live outs — either Jack or Jack pairs to take the lead — which is why the unpaired side converts about 55.9%, the math behind every "I have to gamble" all-in in a tournament. It's a benchmark spot every serious player should know cold.
Think in variance terms: 56.1% equity means JJ loses this all-in nearly 44 times in 100, so even a "dominant" spot is a coin you'll see come up tails plenty. Getting it in as the 56.1% favorite is correct every time; the 43.9% that goes the other way is math, not a misplay.
In practice, AK vs JJ rewards aggression from the favorite and caution from the dog: JJ wants to realize its 55.9% edge by getting value and denying free cards, while AK should lean on fold equity and position rather than hoping to win the pot at showdown about 1 time in 2.
AK vs JJ FAQ
Who wins AK vs JJ preflop?
JJ (Pocket Jacks) is the favorite, winning 55.9% of all runouts, while AK (Ace-King) wins 43.6%. The remaining 0.4% are split pots. Counting splits as half, AK's preflop equity is 43.9%.
How often does AK beat JJ?
AK wins 43.6% of the time all-in preflop against JJ — a genuine underdog, but with enough live outs (about 1 in 2) that the matchup is closer than the favorite would like.
Is JJ vs AK a good spot to get all-in?
For JJ, yes — a 56.1% favorite should happily commit, especially with fold equity. For AK at 43.9%, it depends on the price: enough to continue with initiative, but thin enough that stacking off out of position is usually a leak.
Does JJ hold up against AK after the flop?
JJ is still ahead on 67% of flops and stays ahead through the turn on 62% of boards; AK takes the lead on the other 33% of flops. These are exact figures from full board enumeration.
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