---
title: "A4s vs 33: preflop equity"
url: "https://georgelipoker.com/equity/a4s-vs-33.md"
canonical_url: "https://georgelipoker.com/equity/a4s-vs-33"
last_updated: "2026-10-23"
type: "reference"
summary: "A4s vs 33 is close to a coin flip before the flop: 48.69% to 51.31% equity, counted exactly over every board, with the split by flop type and suit."
related: ["https://georgelipoker.com/equity/a4s-vs-t8s.md", "https://georgelipoker.com/equity/a4s-vs-t9o.md", "https://georgelipoker.com/equity/a3s-vs-33.md"]
---

# A4s vs 33: preflop equity

A4s vs 33 is close to a coin flip before the flop: 48.69% to 51.31% equity, counted exactly over every board, with the split by flop type and suit.

The exact count puts 33 at 51.31% and A4s at 48.69% when the two hands see all five board cards.

## A4s against 33: the numbers

**Exact preflop results for A4s against 33, in percent**

| Hand | Wins | Ties | Loses | Equity |
| --- | --- | --- | --- | --- |
| A4s | 48.379 | 0.624 | 50.997 | 48.691 |
| 33 | 50.997 | 0.624 | 48.379 | 51.309 |

We compare a suited hand with 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.

With only 2.62 points between them, the board decides this matchup far more than the cards in hand. A split pot comes up on 0.62% of boards, so the wins and the equity differ by half of that.

Place 35 of 169 belongs to A4s and place 66 belongs to 33 in the ranking against a random hand.

**Boards behind the percentages: 41,095,296 counted in all**

| Hand | Boards won, about | Boards tied, about | Boards lost, about |
| --- | --- | --- | --- |
| A4s | 19,881,000 | 256,000 | 20,957,000 |
| 33 | 20,957,000 | 256,000 | 19,881,000 |

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.

**A4s against 33 read as odds**

| Hand | Equity as odds (to 1) | Wins one deal in | Loses one deal in | Pot odds needed to call (to 1) |
| --- | --- | --- | --- | --- |
| A4s | 0.949 | 2.067 | 1.961 | 1.054 |
| 33 | 1.054 | 1.961 | 2.067 | 0.949 |

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

By flop texture, 33's equity runs from 50.32% on two-tone flops up to 57.65% on low rainbow flops (nine high or lower). 33 stays ahead on all five textures.

**A4s against 33 by flop texture, in percent**

| Flop | Share of flops | A4s wins | Ties | 33 wins | A4s equity |
| --- | --- | --- | --- | --- | --- |
| Rainbow, ten or higher | 25.220 | 48.367 | 0.291 | 51.342 | 48.513 |
| Rainbow, nine or lower | 5.689 | 41.759 | 1.184 | 57.057 | 42.351 |
| Two-tone | 46.545 | 49.474 | 0.415 | 50.111 | 49.681 |
| Monotone | 5.212 | 47.560 | 3.227 | 49.213 | 49.173 |
| Paired | 17.334 | 47.877 | 0.701 | 51.422 | 48.228 |

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

Relative to a random opponent, A4s changes by -10.34 points (baseline 59.03%) and 33 by -2.38 points (baseline 53.69%).

**A4s and 33 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 |
| --- | --- | --- | --- | --- |
| A4s, all flops | 48.691 | 59.034 | -10.343 | 0.82480 |
| A4s, rainbow, ten or higher | 48.513 | 59.034 | -10.521 | 0.82178 |
| A4s, rainbow, nine or lower | 42.351 | 59.034 | -16.683 | 0.71740 |
| A4s, two-tone | 49.681 | 59.034 | -9.353 | 0.84157 |
| A4s, monotone | 49.173 | 59.034 | -9.861 | 0.83296 |
| A4s, paired | 48.228 | 59.034 | -10.806 | 0.81695 |
| 33, all flops | 51.309 | 53.693 | -2.384 | 0.95560 |
| 33, rainbow, ten or higher | 51.487 | 53.693 | -2.206 | 0.95891 |
| 33, rainbow, nine or lower | 57.649 | 53.693 | +3.956 | 1.07368 |
| 33, two-tone | 50.319 | 53.693 | -3.374 | 0.93716 |
| 33, monotone | 50.827 | 53.693 | -2.866 | 0.94662 |
| 33, paired | 51.772 | 53.693 | -1.921 | 0.96422 |

## Does a shared suit matter?

Of the deals of this matchup, 12 share a suit (33 at 51.47%) and 12 do not (51.15%). 33 does better with a shared suit, by 0.32 points.

**A4s against 33 by suit overlap, in percent**

| Deals | Specific deals | Share of deals | A4s wins | Ties | 33 wins | A4s equity |
| --- | --- | --- | --- | --- | --- | --- |
| Share a suit | 12 | 50.00 | 48.204 | 0.653 | 51.143 | 48.530 |
| No shared suit | 12 | 50.00 | 48.555 | 0.595 | 50.850 | 48.852 |

## How often this matchup comes up

How often does it happen? 24 of the 1,624,350 ordered deals (0.0015%) are A4s against 33, and 48 (0.0030%) if either hand may sit in either seat.

## A worked example

Put $100 each into a $200 pot and deal every board once: 33 averages $102.62 back, ahead of its $100 by $2.62, while A4s averages $97.38, short of its $100 by $2.62.

Run 1,000 deals and the tally comes out near 510 for 33, 484 for A4s and 6 ties.

## The same matchup from the other side

If you came looking for 33 against A4s, the numbers are the same with the hands swapped: 51.31% and 48.69%.

## Keep exploring

The calculator link fills in As4s against 3h3d, 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 As4s against 3h3d in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=As4s&p2=3h3d)
- [A4s combos](https://georgelipoker.com/combos/a4s.md)
- [33 combos](https://georgelipoker.com/combos/33.md)
- [A4s vs T8s](https://georgelipoker.com/equity/a4s-vs-t8s.md)
- [A4s vs T9o](https://georgelipoker.com/equity/a4s-vs-t9o.md)
- [A3s vs 33](https://georgelipoker.com/equity/a3s-vs-33.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

- [A4s vs T8s: preflop equity](https://georgelipoker.com/equity/a4s-vs-t8s.md)
- [A4s vs T9o: preflop equity](https://georgelipoker.com/equity/a4s-vs-t9o.md)
- [A3s vs 33: preflop equity](https://georgelipoker.com/equity/a3s-vs-33.md)