JJ vs 44: Odds & Interactive Calculator

How JJ vs 44 unfolds by street

Pocket Jacks (JJ) is still ahead on 89% of flops against 44, and the lead survives to the turn on 85%. 44 takes the lead on the other 11% of flops, almost always by flopping a set. These figures come from full board enumeration, not a simulation.

JJ vs 44 is a pair-over-pair cooler — the kind of all-in nobody at the table can fold. JJ wins 80.8%, 44 wins 18.8%, and 0.5% of boards chop, a 4.3-to-1 edge for JJ. With nothing but the case pair to chase, 44 is set-mining all-in: it wins about 1 in 5, correct to stack off preflop but a hand that hates a clean runout.

Think in variance terms: 81.0% equity means JJ loses this all-in nearly 19 times in 100, so even a "dominant" spot is a coin you'll see come up tails plenty. Getting it in as the 81.0% favorite is correct every time; the 19.0% that goes the other way is math, not a misplay.

As the bigger pair, JJ, your whole job is to get the money in before a scare card — there's no fold here and slow-playing only lets 44 realize its set equity for free. As the smaller pair, the discipline is recognizing when stacks are deep enough that calling off 18.8% equity is a leak, even though folding pre feels impossible.

Where to take JJ vs 44 next

Getting it in near the money bubble or at a final table? Chip equity isn't prize equity — check the spot in the ICM calculator before you call off your stack.

Played a hand like this yourself? Import it into the poker hand analyzer for a street-by-street review of every decision, not just the all-in.

For the bigger picture, the poker tournament strategy guide covers when to shove and when to fold as stacks shrink, and what GTO poker is explains why strong players think in ranges rather than single hands.

New to the game? The poker hand rankings chart shows which hand wins at showdown, how to play poker: a beginner's guide walks through the rules and betting rounds, and the poker strategy guide shows where preflop equity fits into a winning game plan.

JJ vs 44 FAQ

Who wins JJ vs 44 preflop?

JJ (Pocket Jacks) is the favorite, winning 80.8% of all runouts, while 44 (Pocket Fours) wins 18.8%. The remaining 0.5% are split pots. Counting splits as half, JJ's preflop equity is 81.0%.

Does the JJ vs 44 probability change all-in preflop?

No. Once both hands are all-in preflop the odds are set by the cards alone — position, stack size and who bet first change nothing. The only thing that moves the number is suits: JJ's equity runs from 80.3% to 81.6% depending on how many suits the two hands share, which is why different sites quote slightly different figures. It does change once board cards are dealt (JJ leads on 89% of flops) and in multiway pots, where every extra caller takes equity from both hands.

Can you fold the smaller pair in JJ vs 44?

Almost never preflop all-in — but the 18.8% the smaller pair wins (about 1 in 5) means that when stacks are very deep and the action screams a bigger pair, laying it down is a real, if rare, fold. Set-mining the lower pair works only with the implied odds to win a full stack when you spike.

Does JJ hold up against 44 after the flop?

JJ is still ahead on 89% of flops and stays ahead through the turn on 85% of boards; 44 takes the lead on the other 11% of flops. These are exact figures from full board enumeration.

Run any matchup in the free equity calculator · AA VS TT · AA VS 99 · AA VS 88 · AA VS 77 · AA VS 66 · AA VS 55

JJ against a range

All-in against one known hand is the textbook case; at the table JJ is usually up against a range. Exact equities, computed over every combo with card removal applied:

• JJ vs calling station — 71.9% against 670 combos (50.5% of hands)
• JJ vs BTN open — 70.9% against 586 combos (44.2% of hands)
• JJ vs SB open — 70.0% against 534 combos (40.3% of hands)
• JJ vs CO open — 68.5% against 366 combos (27.6% of hands)

All 200+ hand-vs-range matchups →