--- title: "AQs vs 55: preflop equity" url: "https://georgelipoker.com/equity/aqs-vs-55.md" canonical_url: "https://georgelipoker.com/equity/aqs-vs-55" last_updated: "2026-10-23" type: "reference" summary: "AQs vs 55 is close to a coin flip before the flop: 48.36% to 51.64% equity, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/aqs-vs-qjs.md", "https://georgelipoker.com/equity/aqs-vs-k9s.md", "https://georgelipoker.com/equity/ajs-vs-55.md"] --- # AQs vs 55: preflop equity AQs vs 55 is close to a coin flip before the flop: 48.36% to 51.64% equity, counted exactly over every board, with the split by flop type and suit. Dealt all in against each other, 55 takes 51.64% of the pot on average and AQs takes the other 48.36%. ## AQs against 55: the numbers **Exact preflop results for AQs against 55, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | AQs | 48.122 | 0.467 | 51.411 | 48.356 | | 55 | 51.411 | 0.467 | 48.122 | 51.644 | One side is a suited hand, the other is a pocket pair. A pair against two higher cards is the classic race: the pair is usually a small favorite or close to even, and each overcard that pairs is a way to take the lead. 55 leads by less than 4 points of equity, so the result of any one deal is close to a toss-up. Split pots make up 0.47% of the boards, and both equity figures count them as half a win each. In the ranking of all 169 starting hands, AQs is number 10 and 55 is number 27. **Boards behind the percentages: 41,095,296 counted in all** | Hand | Boards won, about | Boards tied, about | Boards lost, about | | --- | --- | --- | --- | | AQs | 19,776,000 | 192,000 | 21,128,000 | | 55 | 21,128,000 | 192,000 | 19,776,000 | The board total is exact, 24 deals at 1,712,304 boards each. Won, tied and lost counts are rounded to the nearest thousand from the five-decimal percentages. **AQs against 55 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 | 0.936 | 2.078 | 1.945 | 1.068 | | 55 | 1.068 | 1.945 | 2.078 | 0.936 | The last column is the smallest pot odds, written as a pot-to-call ratio, at which a call breaks even with this equity. ## Who is ahead on which flops Low rainbow flops (nine high or lower) are the best for 55 (78.17%); rainbow flops topped by a ten or better are the worst (45.87%). 55 is the favorite overall but falls behind on rainbow flops topped by a ten or better. **AQs against 55 by flop texture, in percent** | Flop | Share of flops | AQs wins | Ties | 55 wins | AQs equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 24.595 | 54.037 | 0.188 | 45.775 | 54.131 | | Rainbow, nine or lower | 6.314 | 21.401 | 0.866 | 77.733 | 21.834 | | Two-tone | 46.545 | 49.639 | 0.300 | 50.061 | 49.789 | | Monotone | 5.212 | 47.489 | 2.595 | 49.916 | 48.786 | | Paired | 17.334 | 45.581 | 0.523 | 53.896 | 45.843 | Read the flop types this way: rainbow has three suits, two-tone has two cards of one suit, monotone has three, and paired repeats a rank. ## Compared with a random hand The table below sets each hand against its own random-hand baseline: a change of -17.85 points for AQs, from 66.21%, and -8.69 for 55, from 60.33%. **AQs and 55 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 | 48.356 | 66.209 | -17.853 | 0.73035 | | AQs, rainbow, ten or higher | 54.131 | 66.209 | -12.078 | 0.81758 | | AQs, rainbow, nine or lower | 21.834 | 66.209 | -44.375 | 0.32977 | | AQs, two-tone | 49.789 | 66.209 | -16.420 | 0.75200 | | AQs, monotone | 48.786 | 66.209 | -17.423 | 0.73685 | | AQs, paired | 45.843 | 66.209 | -20.366 | 0.69240 | | 55, all flops | 51.644 | 60.325 | -8.681 | 0.85610 | | 55, rainbow, ten or higher | 45.869 | 60.325 | -14.456 | 0.76036 | | 55, rainbow, nine or lower | 78.166 | 60.325 | +17.841 | 1.29575 | | 55, two-tone | 50.211 | 60.325 | -10.114 | 0.83234 | | 55, monotone | 51.214 | 60.325 | -9.111 | 0.84897 | | 55, paired | 54.157 | 60.325 | -6.168 | 0.89775 | ## Does a shared suit matter? The suit split reads 51.83% for 55 with a shared suit and 51.46% without one. 55 does better with a shared suit, by 0.37 points. **AQs against 55 by suit overlap, in percent** | Deals | Specific deals | Share of deals | AQs wins | Ties | 55 wins | AQs equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 12 | 50.00 | 47.919 | 0.509 | 51.572 | 48.173 | | No shared suit | 12 | 50.00 | 48.326 | 0.424 | 51.250 | 48.538 | ## How often this matchup comes up Counting specific cards, AQs against 55 appears in 24 of the 1,624,350 ordered heads-up deals (0.0015%), and in 48 when the seats are swapped too (0.0030%). ## A worked example Worked example: both players commit $100, so $200 sits in the middle. Over every board, 55's average share is $103.28 (a gain of $3.28) and AQs' is $96.72 (a loss of $3.28). A thousand deals look like this: 55 takes 514, AQs takes 481, 5 are ties. ## The same matchup from the other side The mirror image, 55 against AQs, is 51.64% to 48.36%, and its address redirects to this page. ## Keep exploring AsQs against 5h5d 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 5h5d in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=AsQs&p2=5h5d) - [AQs combos](https://georgelipoker.com/combos/aqs.md) - [55 combos](https://georgelipoker.com/combos/55.md) - [AQs vs QJs](https://georgelipoker.com/equity/aqs-vs-qjs.md) - [AQs vs K9s](https://georgelipoker.com/equity/aqs-vs-k9s.md) - [AJs vs 55](https://georgelipoker.com/equity/ajs-vs-55.md) - [All hand matchups](https://georgelipoker.com/equity.md) ## How this was computed The figures are counted, not estimated: 1,712,304 boards for every suit pattern of the 24 specific deals, with both seven-card hands compared each time. Equity gives half a win for a tie. For the flop rows, a board is counted once under each of the ten flops inside it. Source: our own exact count from the GeorgeLiPoker poker math library. No outside data is used. ## Related - [AQs vs QJs: preflop equity](https://georgelipoker.com/equity/aqs-vs-qjs.md) - [AQs vs K9s: preflop equity](https://georgelipoker.com/equity/aqs-vs-k9s.md) - [AJs vs 55: preflop equity](https://georgelipoker.com/equity/ajs-vs-55.md)