AJ vs 64s: Preflop Equity & Odds
| Hand | Win | Tie | Equity |
|---|---|---|---|
| AJ (Ace-Jack) | 60.7% | 0.5% | 60.9% |
| 64s (Six-Four Suited) | 38.9% | 0.5% | 39.1% |
Suited vs offsuit: AJ
| Matchup | Win | Tie | Equity |
|---|---|---|---|
| AJs | 62.6% | 0.5% | 62.8% |
| AJo | 60.0% | 0.5% | 60.3% |
How AJ vs 64s unfolds by street
Ace-Jack (AJ) is still ahead on 70% of flops against 64s, and the lead survives to the turn on 67%. 64s takes the lead on the other 30% of flops. These figures come from full board enumeration, not a simulation.
| Street | AJ still ahead | 64s flipped the lead |
|---|---|---|
| Flop | 70% | 30% |
| Turn | 67% | 33% |
AJ vs 64s is a four-live-card fight — no pair, no shared rank, just rank order and geometry. AJ wins 60.7%, 64s wins 38.9%, and 0.5% of boards chop. Whoever pairs first usually scoops, so the edge comes from AJ making the higher pair plus whatever straight and flush equity runs between the two hands.
Think in variance terms: 60.9% equity means AJ loses this all-in nearly 39 times in 100, so even a "dominant" spot is a coin you'll see come up tails plenty. Getting it in as the 60.9% favorite is correct every time; the 39.1% that goes the other way is math, not a misplay.
In practice, AJ vs 64s rewards aggression from the favorite and caution from the dog: AJ wants to realize its 60.7% edge by getting value and denying free cards, while 64s should lean on fold equity and position rather than hoping to win the pot at showdown about 1 time in 3.
AJ vs 64s FAQ
Who wins AJ vs 64s preflop?
AJ (Ace-Jack) is the favorite, winning 60.7% of all runouts, while 64s (Six-Four Suited) wins 38.9%. The remaining 0.5% are split pots. Counting splits as half, AJ's preflop equity is 60.9%.
How often does 64s beat AJ?
64s wins 38.9% of the time all-in preflop against AJ — a genuine underdog, but with enough live outs (about 1 in 3) that the matchup is closer than the favorite would like.
Is AJ vs 64s a good spot to get all-in?
For AJ, yes — a 60.9% favorite should happily commit, especially with fold equity. For 64s at 39.1%, it depends on the price: enough to continue with initiative, but thin enough that stacking off out of position is usually a leak.
Does AJ hold up against 64s after the flop?
AJ is still ahead on 70% of flops and stays ahead through the turn on 67% of boards; 64s takes the lead on the other 30% of flops. These are exact figures from full board enumeration.
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