---
title: "J9s vs 87s: preflop equity"
url: "https://georgelipoker.com/equity/j9s-vs-87s.md"
canonical_url: "https://georgelipoker.com/equity/j9s-vs-87s"
last_updated: "2026-10-23"
type: "reference"
summary: "J9s is a big favorite over 87s before the flop: 63.43% to 36.57% equity, counted exactly over every board, with the split by flop type and suit."
related: ["https://georgelipoker.com/equity/j9s-vs-86s.md", "https://georgelipoker.com/equity/j9s-vs-76s.md", "https://georgelipoker.com/equity/jto-vs-87s.md"]
---

# J9s vs 87s: preflop equity

J9s is a big favorite over 87s before the flop: 63.43% to 36.57% equity, counted exactly over every board, with the split by flop type and suit.

Over all 1,712,304 boards that can follow this deal, J9s finishes with 63.43% of the pot and 87s with 36.57%.

## J9s against 87s: the numbers

**Exact preflop results for J9s against 87s, in percent**

| Hand | Wins | Ties | Loses | Equity |
| --- | --- | --- | --- | --- |
| J9s | 62.801 | 1.265 | 35.934 | 63.433 |
| 87s | 35.934 | 1.265 | 62.801 | 36.567 |

Each side holds one of the suited hands: J9s and 87s. With no overlap in ranks, every card that pairs one hand is a card that does not pair the other.

The lead is steady rather than large, and the flop still has plenty of say in who wins. 1.27% of boards are ties, so the equity of each hand is its win rate plus half of that.

For context, J9s sits at number 55 of 169 starting hands and 87s at number 100 when each is run against a random hand.

**Boards behind the percentages: 27,396,864 counted in all**

| Hand | Boards won, about | Boards tied, about | Boards lost, about |
| --- | --- | --- | --- |
| J9s | 17,206,000 | 347,000 | 9,845,000 |
| 87s | 9,845,000 | 347,000 | 17,206,000 |

The total is exact: 16 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.

**J9s 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) |
| --- | --- | --- | --- | --- |
| J9s | 1.735 | 1.592 | 2.783 | 0.576 |
| 87s | 0.576 | 2.783 | 1.592 | 1.735 |

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

By flop texture, J9s' equity runs from 48.10% on low rainbow flops (nine high or lower) up to 67.60% on rainbow flops topped by a ten or better. 87s takes over on low rainbow flops (nine high or lower), so the favorite before the flop is the underdog on those boards.

**J9s against 87s by flop texture, in percent**

| Flop | Share of flops | J9s wins | Ties | 87s wins | J9s equity |
| --- | --- | --- | --- | --- | --- |
| Rainbow, ten or higher | 25.220 | 67.222 | 0.759 | 32.019 | 67.601 |
| Rainbow, nine or lower | 5.689 | 47.948 | 0.310 | 51.742 | 48.103 |
| Two-tone | 46.727 | 62.610 | 0.619 | 36.771 | 62.920 |
| Monotone | 5.273 | 58.662 | 3.648 | 37.690 | 60.486 |
| Paired | 17.091 | 63.019 | 3.361 | 33.620 | 64.699 |

Flop types: rainbow means three different suits, two-tone means one suit twice, monotone means one suit three times, paired means a repeated rank.

## Compared with a random hand

Compared with a random opponent, this matchup shifts J9s from 55.66% by +7.77 points and 87s from 47.94% by -11.37 points.

**J9s 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 |
| --- | --- | --- | --- | --- |
| J9s, all flops | 63.433 | 55.662 | +7.771 | 1.13961 |
| J9s, rainbow, ten or higher | 67.601 | 55.662 | +11.939 | 1.21449 |
| J9s, rainbow, nine or lower | 48.103 | 55.662 | -7.559 | 0.86420 |
| J9s, two-tone | 62.920 | 55.662 | +7.258 | 1.13039 |
| J9s, monotone | 60.486 | 55.662 | +4.824 | 1.08667 |
| J9s, paired | 64.699 | 55.662 | +9.037 | 1.16235 |
| 87s, all flops | 36.567 | 47.936 | -11.369 | 0.76283 |
| 87s, rainbow, ten or higher | 32.399 | 47.936 | -15.537 | 0.67588 |
| 87s, rainbow, nine or lower | 51.897 | 47.936 | +3.961 | 1.08263 |
| 87s, two-tone | 37.080 | 47.936 | -10.856 | 0.77353 |
| 87s, monotone | 39.514 | 47.936 | -8.422 | 0.82431 |
| 87s, paired | 35.301 | 47.936 | -12.635 | 0.73642 |

## Does a shared suit matter?

Split by suits, the deals give J9s 65.87% when the hands overlap in a suit and 62.62% when they do not. J9s does better with a shared suit, by 3.25 points.

**J9s against 87s by suit overlap, in percent**

| Deals | Specific deals | Share of deals | J9s wins | Ties | 87s wins | J9s equity |
| --- | --- | --- | --- | --- | --- | --- |
| Share a suit | 4 | 25.00 | 65.182 | 1.381 | 33.437 | 65.872 |
| No shared suit | 12 | 75.00 | 62.007 | 1.226 | 36.767 | 62.620 |

## How often this matchup comes up

The class pair covers 16 combinations of specific cards in a fixed seat order, 0.0010% of 1,624,350, and 32 (0.0020%) in either order.

## A worked example

Take a $200 pot built from $100 each. J9s' equity of 63.43% is worth $126.86, a $26.86 edge, and 87s' 36.57% is worth $73.14, which is $26.86 under its stake.

Out of 1,000 deals you should see around 628 outright wins for J9s, 359 for 87s, and 13 split pots.

## The same matchup from the other side

Swap the hands and you get 87s with 36.57% against J9s with 63.43%. We keep one page per matchup, with the better-ranked hand first.

## Keep exploring

The calculator link fills in Js9s against 8h7h, a deal where the two hands share no suit. Change any card to test your own hand. The neighboring matchups below swap one of the two hands for one of similar strength.

- [Open Js9s against 8h7h in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=Js9s&p2=8h7h)
- [J9s combos](https://georgelipoker.com/combos/j9s.md)
- [87s combos](https://georgelipoker.com/combos/87s.md)
- [J9s vs 86s](https://georgelipoker.com/equity/j9s-vs-86s.md)
- [J9s vs 76s](https://georgelipoker.com/equity/j9s-vs-76s.md)
- [JTo vs 87s](https://georgelipoker.com/equity/jto-vs-87s.md)
- [All hand matchups](https://georgelipoker.com/equity.md)

## How this was computed

Each figure is a complete count over boards. Take the 16 specific deals, group them by suit pattern, deal all 1,712,304 boards against each, and compare the two seven-card hands. Equity counts a tie as half a win; the flop rows use every one of a board's ten flops.

Source: our own exact count from the GeorgeLiPoker poker math library. No outside data is used.

## Related

- [J9s vs 86s: preflop equity](https://georgelipoker.com/equity/j9s-vs-86s.md)
- [J9s vs 76s: preflop equity](https://georgelipoker.com/equity/j9s-vs-76s.md)
- [JTo vs 87s: preflop equity](https://georgelipoker.com/equity/jto-vs-87s.md)