---
title: "A7s vs 87s: preflop equity"
url: "https://georgelipoker.com/equity/a7s-vs-87s.md"
canonical_url: "https://georgelipoker.com/equity/a7s-vs-87s"
last_updated: "2026-10-23"
type: "reference"
summary: "A7s is a big favorite over 87s before the flop: 66.98% to 33.02% equity, counted exactly over every board, with the split by flop type and suit."
related: ["https://georgelipoker.com/equity/a7s-vs-86s.md", "https://georgelipoker.com/equity/a7s-vs-76s.md", "https://georgelipoker.com/equity/a9o-vs-87s.md"]
---

# A7s vs 87s: preflop equity

A7s is a big favorite over 87s before the flop: 66.98% to 33.02% equity, counted exactly over every board, with the split by flop type and suit.

If A7s and 87s get all the chips in before the flop, A7s owns 66.98% of the pot in the long run and 87s owns 33.02%.

## A7s against 87s: the numbers

**Exact preflop results for A7s against 87s, in percent**

| Hand | Wins | Ties | Loses | Equity |
| --- | --- | --- | --- | --- |
| A7s | 65.983 | 1.997 | 32.020 | 66.982 |
| 87s | 32.020 | 1.997 | 65.983 | 33.018 |

Here suited hands face each other, A7s on one side and 87s 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.

A lead of 33.96 points is large but not decisive: 87s still takes about 320 of every 1,000 deals. Ties are part of the picture: 2.00% of boards end in a split pot, and each side counts that as half a win.

Among the 169 starting hands, A7s is number 24 and 87s is number 100 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 |
| --- | --- | --- | --- |
| A7s | 13,558,000 | 410,000 | 6,579,000 |
| 87s | 6,579,000 | 410,000 | 13,558,000 |

The board total is exact, 12 deals at 1,712,304 boards each. Won, tied and lost counts are rounded to the nearest thousand from the five-decimal percentages.

**A7s against 87s read as odds**

| Hand | Equity as odds (to 1) | Wins one deal in | Loses one deal in | Pot odds needed to call (to 1) |
| --- | --- | --- | --- | --- |
| A7s | 2.029 | 1.516 | 3.123 | 0.493 |
| 87s | 0.493 | 3.123 | 1.516 | 2.029 |

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

A7s prefers paired flops, where it holds 71.76%, and likes low rainbow flops (nine high or lower) least, where it holds 52.07%. A7s stays ahead on all five textures, but the swing between them is large, so how the flop looks matters a great deal.

**A7s against 87s by flop texture, in percent**

| Flop | Share of flops | A7s wins | Ties | 87s wins | A7s equity |
| --- | --- | --- | --- | --- | --- |
| Rainbow, ten or higher | 25.254 | 70.330 | 1.415 | 28.255 | 71.038 |
| Rainbow, nine or lower | 5.654 | 49.956 | 4.237 | 45.807 | 52.074 |
| Two-tone | 46.543 | 64.617 | 1.695 | 33.688 | 65.465 |
| Monotone | 5.215 | 59.101 | 4.153 | 36.746 | 61.178 |
| Paired | 17.334 | 70.618 | 2.275 | 27.107 | 71.755 |

Rainbow flops have three suits, two-tone flops repeat one suit, monotone flops are all one suit, and paired flops repeat a rank.

## Compared with a random hand

The table below sets each hand against its own random-hand baseline: a change of +6.00 points for A7s, from 60.98%, and -14.92 for 87s, from 47.94%.

**A7s and 87s 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 |
| --- | --- | --- | --- | --- |
| A7s, all flops | 66.982 | 60.984 | +5.998 | 1.09835 |
| A7s, rainbow, ten or higher | 71.038 | 60.984 | +10.054 | 1.16486 |
| A7s, rainbow, nine or lower | 52.074 | 60.984 | -8.910 | 0.85390 |
| A7s, two-tone | 65.465 | 60.984 | +4.481 | 1.07348 |
| A7s, monotone | 61.178 | 60.984 | +0.194 | 1.00318 |
| A7s, paired | 71.755 | 60.984 | +10.771 | 1.17662 |
| 87s, all flops | 33.018 | 47.936 | -14.918 | 0.68879 |
| 87s, rainbow, ten or higher | 28.962 | 47.936 | -18.974 | 0.60418 |
| 87s, rainbow, nine or lower | 47.926 | 47.936 | -0.010 | 0.99979 |
| 87s, two-tone | 34.535 | 47.936 | -13.401 | 0.72044 |
| 87s, monotone | 38.822 | 47.936 | -9.114 | 0.80987 |
| 87s, paired | 28.245 | 47.936 | -19.691 | 0.58922 |

## Does a shared suit matter?

A shared suit is impossible for this matchup, so A7s' 66.98% is the answer for every suit pattern.

**A7s against 87s by suit overlap, in percent**

| Deals | Specific deals | Share of deals | A7s wins | Ties | 87s wins | A7s equity |
| --- | --- | --- | --- | --- | --- | --- |
| Share a suit | 0 | 0.00 | not possible | not possible | not possible | not possible |
| No shared suit | 12 | 100.00 | 65.983 | 1.997 | 32.020 | 66.982 |

## How often this matchup comes up

The class pair covers 12 combinations of specific cards in a fixed seat order, 0.0007% of 1,624,350, and 24 (0.0015%) in either order.

## A worked example

Take a $200 pot built from $100 each. A7s' equity of 66.98% is worth $133.96, a $33.96 edge, and 87s' 33.02% is worth $66.04, which is $33.96 under its stake.

Over a long run, 1,000 deals split into about 660 for A7s, 320 for 87s and 20 tied.

## The same matchup from the other side

Read it from the other side: 87s against A7s is the same matchup with the numbers swapped, so 87s holds 33.02% and A7s holds 66.98%. That address sends you back to this page.

## Keep exploring

Try As7s against 8h7h 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 As7s against 8h7h in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=As7s&p2=8h7h)
- [A7s combos](https://georgelipoker.com/combos/a7s.md)
- [87s combos](https://georgelipoker.com/combos/87s.md)
- [A7s vs 86s](https://georgelipoker.com/equity/a7s-vs-86s.md)
- [A7s vs 76s](https://georgelipoker.com/equity/a7s-vs-76s.md)
- [A9o vs 87s](https://georgelipoker.com/equity/a9o-vs-87s.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 12 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

- [A7s vs 86s: preflop equity](https://georgelipoker.com/equity/a7s-vs-86s.md)
- [A7s vs 76s: preflop equity](https://georgelipoker.com/equity/a7s-vs-76s.md)
- [A9o vs 87s: preflop equity](https://georgelipoker.com/equity/a9o-vs-87s.md)