--- title: "AQo vs 55: preflop equity" url: "https://georgelipoker.com/equity/aqo-vs-55.md" canonical_url: "https://georgelipoker.com/equity/aqo-vs-55" last_updated: "2026-10-23" type: "reference" summary: "Who is ahead, AQo or 55? 55 leads 54.27% to 45.73% before the flop, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/aqo-vs-qjs.md", "https://georgelipoker.com/equity/aqo-vs-k9s.md", "https://georgelipoker.com/equity/ajo-vs-55.md"] --- # AQo vs 55: preflop equity Who is ahead, AQo or 55? 55 leads 54.27% to 45.73% before the flop, counted exactly over every board, with the split by flop type and suit. Over all 1,712,304 boards that can follow this deal, 55 finishes with 54.27% of the pot and AQo with 45.73%. ## AQo against 55: the numbers **Exact preflop results for AQo against 55, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | AQo | 45.512 | 0.443 | 54.045 | 45.734 | | 55 | 54.045 | 0.443 | 45.512 | 54.266 | One side is an offsuit hand, the other is a pocket pair. This is a pair against two overcards, a matchup that stays close because the other hand only needs one of its ranks to appear. 55 leads by less than 9 points of equity, so the result of any one deal is close to a toss-up. Ties are 0.44% of the outcomes here; each tied board gives both hands half the pot. Among the 169 starting hands, AQo is number 14 and 55 is number 27 by strength against a random hand. **Boards behind the percentages: 123,285,888 counted in all** | Hand | Boards won, about | Boards tied, about | Boards lost, about | | --- | --- | --- | --- | | AQo | 56,110,000 | 546,000 | 66,630,000 | | 55 | 66,630,000 | 546,000 | 56,110,000 | The total is exact: 72 specific deals times 1,712,304 boards. The three counts are approximate, worked out from the percentages to five decimals and rounded to the nearest thousand. **AQo 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) | | --- | --- | --- | --- | --- | | AQo | 0.843 | 2.197 | 1.850 | 1.187 | | 55 | 1.187 | 1.850 | 2.197 | 0.843 | The final column gives the least the pot must offer for each unit called for a call to break even at this equity. ## Who is ahead on which flops Low rainbow flops (nine high or lower) are the best for 55 (80.88%); rainbow flops topped by a ten or better are the worst (47.34%). Rainbow flops topped by a ten or better favor AQo, the hand that is behind overall. **AQo against 55 by flop texture, in percent** | Flop | Share of flops | AQo wins | Ties | 55 wins | AQo equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 24.717 | 52.567 | 0.195 | 47.238 | 52.665 | | Rainbow, nine or lower | 6.314 | 18.670 | 0.906 | 80.424 | 19.123 | | Two-tone | 46.485 | 46.016 | 0.326 | 53.658 | 46.179 | | Monotone | 5.151 | 47.904 | 1.846 | 50.250 | 48.827 | | Paired | 17.333 | 43.169 | 0.523 | 56.308 | 43.431 | 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, AQo changes by -18.70 points (baseline 64.43%) and 55 by -6.06 points (baseline 60.33%). **AQo 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 | | --- | --- | --- | --- | --- | | AQo, all flops | 45.734 | 64.432 | -18.698 | 0.70980 | | AQo, rainbow, ten or higher | 52.665 | 64.432 | -11.767 | 0.81737 | | AQo, rainbow, nine or lower | 19.123 | 64.432 | -45.309 | 0.29679 | | AQo, two-tone | 46.179 | 64.432 | -18.253 | 0.71671 | | AQo, monotone | 48.827 | 64.432 | -15.605 | 0.75781 | | AQo, paired | 43.431 | 64.432 | -21.001 | 0.67406 | | 55, all flops | 54.266 | 60.325 | -6.059 | 0.89956 | | 55, rainbow, ten or higher | 47.335 | 60.325 | -12.990 | 0.78467 | | 55, rainbow, nine or lower | 80.877 | 60.325 | +20.552 | 1.34069 | | 55, two-tone | 53.821 | 60.325 | -6.504 | 0.89218 | | 55, monotone | 51.173 | 60.325 | -9.152 | 0.84829 | | 55, paired | 56.569 | 60.325 | -3.756 | 0.93774 | ## Does a shared suit matter? Looking only at deals where the hands share a suit, 55 has 54.19%; looking only at deals where they do not, 54.67%. 55 does better with no shared suit, by 0.48 points. **AQo against 55 by suit overlap, in percent** | Deals | Specific deals | Share of deals | AQo wins | Ties | 55 wins | AQo equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 60 | 83.33 | 45.586 | 0.457 | 53.957 | 45.814 | | No shared suit | 12 | 16.67 | 45.146 | 0.369 | 54.485 | 45.331 | ## How often this matchup comes up Exactly 72 specific deals fit this matchup in one seat order, which is 0.0044% of 1,624,350; both orders together give 144, or 0.0089%. ## A worked example To see what the equity is worth, imagine $100 each in a $200 pot. 55 is worth $108.54 on average (+$8.54); AQo is worth $91.46 (-$8.54). In 1,000 deals of exactly this matchup, expect about 541 won outright by 55, about 455 won outright by AQo and about 4 split. ## The same matchup from the other side The mirror image, 55 against AQo, is 54.27% to 45.73%, and its address redirects to this page. ## Keep exploring Try AsQh against 5d5c in the calculator: the hands share no suit, and every card can be changed. The links after it are the closest matchups in the ranking. - [Open AsQh against 5d5c in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=AsQh&p2=5d5c) - [AQo combos](https://georgelipoker.com/combos/aqo.md) - [55 combos](https://georgelipoker.com/combos/55.md) - [AQo vs QJs](https://georgelipoker.com/equity/aqo-vs-qjs.md) - [AQo vs K9s](https://georgelipoker.com/equity/aqo-vs-k9s.md) - [AJo vs 55](https://georgelipoker.com/equity/ajo-vs-55.md) - [All hand matchups](https://georgelipoker.com/equity.md) ## How this was computed We counted every case. Each suit pattern of the 72 specific AQo against 55 deals meets all 1,712,304 boards, and the better five-card hand wins; a split pot is half a win each. The flop table reads each board under all ten of its three-card flops. Source: our own exact count from the GeorgeLiPoker poker math library. No outside data is used. ## Related - [AQo vs QJs: preflop equity](https://georgelipoker.com/equity/aqo-vs-qjs.md) - [AQo vs K9s: preflop equity](https://georgelipoker.com/equity/aqo-vs-k9s.md) - [AJo vs 55: preflop equity](https://georgelipoker.com/equity/ajo-vs-55.md)