--- title: "AA vs AJs: preflop equity" url: "https://georgelipoker.com/equity/aa-vs-ajs.md" canonical_url: "https://georgelipoker.com/equity/aa-vs-ajs" last_updated: "2026-10-23" type: "reference" summary: "AA is a big favorite over AJs before the flop: 87.06% to 12.94% equity, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/aa-vs-ako.md", "https://georgelipoker.com/equity/aa-vs-ats.md", "https://georgelipoker.com/equity/kk-vs-ajs.md"] --- # AA vs AJs: preflop equity AA is a big favorite over AJs before the flop: 87.06% to 12.94% equity, counted exactly over every board, with the split by flop type and suit. Dealt all in against each other, AA takes 87.06% of the pot on average and AJs takes the other 12.94%. ## AA against AJs: the numbers **Exact preflop results for AA against AJs, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | AA | 86.445 | 1.234 | 12.321 | 87.062 | | AJs | 12.321 | 1.234 | 86.445 | 12.938 | AA, a pocket pair, plays AJs, a suited hand. The pair already holds one of the other hand's ranks, and that overlap cuts down the cards the other hand can pair with. That is a heavy lead: AJs needs the board to help it on most runouts and still falls behind far more often than not. Ties are part of the picture: 1.23% of boards end in a split pot, and each side counts that as half a win. Among the 169 starting hands, AA is number 1 and AJs is number 11 by strength against a random hand. **Boards behind the percentages: 20,547,648 counted in all** | Hand | Boards won, about | Boards tied, about | Boards lost, about | | --- | --- | --- | --- | | AA | 17,762,000 | 254,000 | 2,532,000 | | AJs | 2,532,000 | 254,000 | 17,762,000 | 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. **AA against AJs read as odds** | Hand | Equity as odds (to 1) | Wins one deal in | Loses one deal in | Pot odds needed to call (to 1) | | --- | --- | --- | --- | --- | | AA | 6.729 | 1.157 | 8.116 | 0.149 | | AJs | 0.149 | 8.116 | 1.157 | 6.729 | 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 Split by what the flop looks like, AA peaks at 94.12% on low rainbow flops (nine high or lower) and bottoms out at 77.09% on monotone flops. AA stays ahead on all five textures, but the swing between them is large, so how the flop looks matters a great deal. **AA against AJs by flop texture, in percent** | Flop | Share of flops | AA wins | Ties | AJs wins | AA equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 23.011 | 88.762 | 1.016 | 10.222 | 89.270 | | Rainbow, nine or lower | 7.771 | 92.780 | 2.685 | 4.535 | 94.122 | | Two-tone | 46.236 | 84.908 | 1.301 | 13.791 | 85.558 | | Monotone | 5.151 | 75.930 | 2.327 | 21.743 | 77.093 | | Paired | 17.831 | 87.720 | 0.393 | 11.887 | 87.917 | 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 Each hand has a baseline against a random hand: 85.20% for AA, 65.39% for AJs. Here the change is +1.86 and -52.45 points. **AA and AJs 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 | | --- | --- | --- | --- | --- | | AA, all flops | 87.062 | 85.204 | +1.858 | 1.02181 | | AA, rainbow, ten or higher | 89.270 | 85.204 | +4.066 | 1.04772 | | AA, rainbow, nine or lower | 94.122 | 85.204 | +8.918 | 1.10467 | | AA, two-tone | 85.558 | 85.204 | +0.354 | 1.00415 | | AA, monotone | 77.093 | 85.204 | -8.111 | 0.90480 | | AA, paired | 87.917 | 85.204 | +2.713 | 1.03184 | | AJs, all flops | 12.938 | 65.393 | -52.455 | 0.19785 | | AJs, rainbow, ten or higher | 10.730 | 65.393 | -54.663 | 0.16408 | | AJs, rainbow, nine or lower | 5.878 | 65.393 | -59.515 | 0.08989 | | AJs, two-tone | 14.442 | 65.393 | -50.951 | 0.22085 | | AJs, monotone | 22.907 | 65.393 | -42.486 | 0.35030 | | AJs, paired | 12.083 | 65.393 | -53.310 | 0.18478 | ## Does a shared suit matter? AA and AJs never overlap in suit in a legal deal, so the whole matchup sits in the no-shared-suit row. **AA against AJs by suit overlap, in percent** | Deals | Specific deals | Share of deals | AA wins | Ties | AJs wins | AA equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 0 | 0.00 | not possible | not possible | not possible | not possible | | No shared suit | 12 | 100.00 | 86.445 | 1.234 | 12.321 | 87.062 | ## How often this matchup comes up Counting specific cards, AA against AJs 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 Try it with money: two players each put in $100 and the whole board runs out every possible way. AA averages $174.12 from the $200, up $74.12; AJs averages $25.88, down $74.12. Over a long run, 1,000 deals split into about 865 for AA, 123 for AJs and 12 tied. ## The same matchup from the other side AJs versus AA is this same page seen from the other hand: 12.94% for AJs, 87.06% for AA. ## Keep exploring AsAh against AdJd 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 AsAh against AdJd in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=AsAh&p2=AdJd) - [AA combos](https://georgelipoker.com/combos/aa.md) - [AJs combos](https://georgelipoker.com/combos/ajs.md) - [AA vs AKo](https://georgelipoker.com/equity/aa-vs-ako.md) - [AA vs ATs](https://georgelipoker.com/equity/aa-vs-ats.md) - [KK vs AJs](https://georgelipoker.com/equity/kk-vs-ajs.md) - [All hand matchups](https://georgelipoker.com/equity.md) ## How this was computed The page is built from a full enumeration: 1,712,304 boards, every suit pattern of the 12 specific deals, both seven-card hands evaluated. A tie is worth half a win to each hand, and a board is tallied under each of its ten possible flops for the texture rows. Source: our own exact count from the GeorgeLiPoker poker math library. No outside data is used. ## Related - [AA vs AKo: preflop equity](https://georgelipoker.com/equity/aa-vs-ako.md) - [AA vs ATs: preflop equity](https://georgelipoker.com/equity/aa-vs-ats.md) - [KK vs AJs: preflop equity](https://georgelipoker.com/equity/kk-vs-ajs.md)