--- title: "AQs vs A4s: preflop equity" url: "https://georgelipoker.com/equity/aqs-vs-a4s.md" canonical_url: "https://georgelipoker.com/equity/aqs-vs-a4s" last_updated: "2026-10-23" type: "reference" summary: "AQs is a big favorite over A4s before the flop: 69.73% to 30.27% equity, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/aqs-vs-a3s.md", "https://georgelipoker.com/equity/aqs-vs-qjo.md", "https://georgelipoker.com/equity/ajs-vs-a4s.md"] --- # AQs vs A4s: preflop equity AQs is a big favorite over A4s before the flop: 69.73% to 30.27% equity, counted exactly over every board, with the split by flop type and suit. Counting every board, the equity split is 69.73% for AQs and 30.27% for A4s, so AQs leads by 39.46 points. ## AQs against A4s: the numbers **Exact preflop results for AQs against A4s, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | AQs | 66.999 | 5.463 | 27.538 | 69.730 | | A4s | 27.538 | 5.463 | 66.999 | 30.270 | Here suited hands face each other, AQs on one side and A4s on the other. The two hands share a rank, and the one with the better other card dominates: it wins most kicker battles when that shared rank hits. That is a clear edge, 69.73% to 30.27%, but A4s still wins often enough that one hand proves nothing. The tie share is 5.46%: on those boards the pot is chopped and neither hand wins outright. Place 10 of 169 belongs to AQs and place 35 belongs to A4s in the ranking against a random hand. **Boards behind the percentages: 20,547,648 counted in all** | Hand | Boards won, about | Boards tied, about | Boards lost, about | | --- | --- | --- | --- | | AQs | 13,767,000 | 1,123,000 | 5,658,000 | | A4s | 5,658,000 | 1,123,000 | 13,767,000 | 12 specific deals times 1,712,304 boards gives the exact total. The won, tied and lost counts are approximations from the five-decimal percentages, rounded to the nearest thousand. **AQs against A4s read as odds** | Hand | Equity as odds (to 1) | Wins one deal in | Loses one deal in | Pot odds needed to call (to 1) | | --- | --- | --- | --- | --- | | AQs | 2.304 | 1.493 | 3.631 | 0.434 | | A4s | 0.434 | 3.631 | 1.493 | 2.304 | The last column is the break-even price: the pot odds a call needs to offer, as a ratio of pot to call. ## Who is ahead on which flops AQs prefers rainbow flops topped by a ten or better, where it holds 76.52%, and likes low rainbow flops (nine high or lower) least, where it holds 55.59%. AQs stays ahead on all five textures, but the swing between them is large, so how the flop looks matters a great deal. **AQs against A4s by flop texture, in percent** | Flop | Share of flops | AQs wins | Ties | A4s wins | AQs equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 23.867 | 74.769 | 3.497 | 21.734 | 76.518 | | Rainbow, nine or lower | 7.042 | 53.501 | 4.175 | 42.324 | 55.588 | | Two-tone | 46.543 | 67.363 | 3.334 | 29.303 | 69.030 | | Monotone | 5.215 | 61.086 | 5.291 | 33.623 | 63.731 | | Paired | 17.333 | 62.582 | 14.466 | 22.952 | 69.815 | A rainbow flop shows three suits, a two-tone flop repeats one suit, a monotone flop is a single suit, and a paired flop repeats a rank. ## Compared with a random hand Relative to a random opponent, AQs changes by +3.52 points (baseline 66.21%) and A4s by -28.76 points (baseline 59.03%). **AQs and A4s here compared with each against a random hand, in percent** | Case | Equity here | Against a random hand | Change in points | Times the random-hand equity | | --- | --- | --- | --- | --- | | AQs, all flops | 69.730 | 66.209 | +3.521 | 1.05318 | | AQs, rainbow, ten or higher | 76.518 | 66.209 | +10.309 | 1.15570 | | AQs, rainbow, nine or lower | 55.588 | 66.209 | -10.621 | 0.83958 | | AQs, two-tone | 69.030 | 66.209 | +2.821 | 1.04261 | | AQs, monotone | 63.731 | 66.209 | -2.478 | 0.96257 | | AQs, paired | 69.815 | 66.209 | +3.606 | 1.05446 | | A4s, all flops | 30.270 | 59.034 | -28.764 | 0.51276 | | A4s, rainbow, ten or higher | 23.482 | 59.034 | -35.552 | 0.39777 | | A4s, rainbow, nine or lower | 44.412 | 59.034 | -14.622 | 0.75231 | | A4s, two-tone | 30.970 | 59.034 | -28.064 | 0.52461 | | A4s, monotone | 36.269 | 59.034 | -22.765 | 0.61437 | | A4s, paired | 30.185 | 59.034 | -28.849 | 0.51132 | ## Does a shared suit matter? There is no shared-suit case for this pair, since the cards they would need are already in the other hand. Every deal is a no-shared-suit deal. **AQs against A4s by suit overlap, in percent** | Deals | Specific deals | Share of deals | AQs wins | Ties | A4s wins | AQs equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 0 | 0.00 | not possible | not possible | not possible | not possible | | No shared suit | 12 | 100.00 | 66.999 | 5.463 | 27.538 | 69.730 | ## How often this matchup comes up Counting specific cards, AQs against A4s appears in 12 of the 1,624,350 ordered heads-up deals (0.0007%), and in 24 when the seats are swapped too (0.0015%). ## A worked example Worked example: both players commit $100, so $200 sits in the middle. Over every board, AQs' average share is $139.46 (a gain of $39.46) and A4s' is $60.54 (a loss of $39.46). Scaled to 1,000 deals, that is roughly 670 wins for AQs, 275 for A4s and 55 chopped pots. ## The same matchup from the other side One page covers both views. From A4s' side the equity is 30.27%, and from AQs' side it is 69.73%. ## Keep exploring AsQs against Ah4h is a ready-made deal for the calculator, with no suit in common between the hands. The neighboring matchups below replace one hand with another of similar strength. - [Open AsQs against Ah4h in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=AsQs&p2=Ah4h) - [AQs combos](https://georgelipoker.com/combos/aqs.md) - [A4s combos](https://georgelipoker.com/combos/a4s.md) - [AQs vs A3s](https://georgelipoker.com/equity/aqs-vs-a3s.md) - [AQs vs QJo](https://georgelipoker.com/equity/aqs-vs-qjo.md) - [AJs vs A4s](https://georgelipoker.com/equity/ajs-vs-a4s.md) - [All hand matchups](https://georgelipoker.com/equity.md) ## How this was computed This is an exact count with no sampling. For the 12 ways to deal one AQs and one A4s without reusing a card, grouped by suit pattern, every one of the 1,712,304 possible boards is dealt and both seven-card hands are compared. A tie counts as half a win in the equity column, and each board is counted once under each of its ten three-card flops. Source: our own exact count from the GeorgeLiPoker poker math library. No outside data is used. ## Related - [AQs vs A3s: preflop equity](https://georgelipoker.com/equity/aqs-vs-a3s.md) - [AQs vs QJo: preflop equity](https://georgelipoker.com/equity/aqs-vs-qjo.md) - [AJs vs A4s: preflop equity](https://georgelipoker.com/equity/ajs-vs-a4s.md)