AA vs A4s: Odds & Interactive Calculator
| Hand | Win | Tie | Equity |
|---|---|---|---|
| AA (Pocket Aces) | 86.5% | 1.3% | 87.1% |
| A4s (Ace-Four Suited) | 12.3% | 1.3% | 12.9% |
How AA vs A4s unfolds by street
Pocket Aces (AA) is still ahead on 98% of flops against A4s, and the lead survives to the turn on 94%. A4s takes the lead on the other 2% of flops, almost always by flopping a set. These figures come from full board enumeration, not a simulation.
| Street | AA still ahead | A4s flipped the lead |
|---|---|---|
| Flop | 98% | 2% |
| Turn | 94% | 6% |
AA vs A4s is a card-removal spot: the pair holds one of the cards the unpaired hand most wants. AA wins 86.5%, A4s wins 12.3%, and 1.3% of boards chop. Blocking an out (and vice versa) pushes the favorite past a clean race — it's one of the most common all-in confrontations you'll actually face.
At a final table the raw 87.1% / 12.9% split is only half the story — ICM bends it. As the 12.9% underdog, A4s pays an extra survival premium, so the chip-EV "close enough" call can be a clear ICM fold. The pure equity sets the floor; the payout ladder sets the real price.
In practice, AA vs A4s rewards aggression from the favorite and caution from the dog: AA wants to realize its 86.5% edge by getting value and denying free cards, while A4s should lean on fold equity and position rather than hoping to win the pot at showdown about 1 time in 8.
Where to take AA vs A4s 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.
AA vs A4s FAQ
Who wins AA vs A4s preflop?
AA (Pocket Aces) is the favorite, winning 86.5% of all runouts, while A4s (Ace-Four Suited) wins 12.3%. The remaining 1.3% are split pots. Counting splits as half, AA's preflop equity is 87.1%.
Does the AA vs A4s 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. Suits cannot change it either — every suit combination of AA and A4s comes out at 87.1%. It does change once board cards are dealt (AA leads on 98% of flops) and in multiway pots, where every extra caller takes equity from both hands.
Is AA vs A4s a good spot to get all-in?
For AA, yes — a 87.1% favorite should happily commit, especially with fold equity. For A4s at 12.9%, it depends on the price: enough to continue with initiative, but thin enough that stacking off out of position is usually a leak.
Does AA hold up against A4s after the flop?
AA is still ahead on 98% of flops and stays ahead through the turn on 94% of boards; A4s takes the lead on the other 2% of flops. These are exact figures from full board enumeration.
Run any matchup in the free equity calculator · AA VS AQ · AA VS AJ · KK VS KQ · KK VS KJ · QQ VS AQ · QQ VS KQ
AA against a range
All-in against one known hand is the textbook case; at the table AA is usually up against a range. Exact equities, computed over every combo with card removal applied:
- AA vs calling station — 84.3% against 670 combos (50.5% of hands)
- AA vs BTN open — 84.1% against 586 combos (44.2% of hands)
- AA vs SB open — 84.4% against 534 combos (40.3% of hands)
- AA vs CO open — 83.6% against 366 combos (27.6% of hands)