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Sequential lay calculator

Free

Lay off an accumulator one leg at a time, with the stake for each leg.

Sequential lay calculator widget

Design: font, colours, radius
Font

Inherit the font of the page it sits on.

Colours
Radius

Default keeps the widget's own corners.

Accent, surface, text and radius are the only overridable tokens: a bounded set that keeps every widget readable. Fonts are stacks, so an embed never downloads one.

Embed code
Embed codeLive

This rewrites itself as you change the controls above: font, colours and radius. Copy it from the button under the code.

index.html
<div data-or-widget="sequential"
     data-or-theme="midnight"
     data-or-font="host"></div>
<script src="https://oddsrelay.io/widgets/v1/oddsrelay-widgets.js" crossorigin="anonymous" async></script>
Copy this and paste it on your site.

Paste it once, anywhere. The script auto-mounts every data-or-widget element and is style-isolated in a Shadow DOM, so it never clashes with your CSS.

Installing on WordPress, Webflow, Squarespace, Wix or React?
WordPress
Add a Custom HTML block (or switch the classic editor to the Text tab) and paste the snippet.
Webflow
Drop in an Embed element, paste the snippet, and publish. The widget renders on the published site.
Squarespace
Insert a Code block where you want the widget and paste the snippet as HTML.
Wix
Add an Embed HTML element (iFrame-free custom code) and paste the snippet.
Shopify
Paste into a Custom Liquid section (or theme.liquid for every page). A section keeps the widget on the one template you want it on.
React / Next.js
Render the div, then load the script once (e.g. next/script or an effect). The bundle auto-mounts new [data-or-widget] elements; call window.OddsRelay.scan() after client-side navigations if needed.

Loading the interactive widget…

Laying a whole accumulator at once ties up a large liability. Laying it leg by leg, placing each lay only after the previous leg has won, keeps the liability small. This calculator gives you the stake to lay on each leg.

What it does

  • 2 to 5 legs, each with its own lay odds and commission
  • A progressive lay stake for every leg, one tap to copy
  • Four methods: standard, standard free bet, underlay and underlay lock-in
  • The overall qualifying loss if every leg wins

How to use it

  1. 1Enter the accumulator. Type the back stake and the combined accumulator odds, and pick the number of legs.
  2. 2Add each leg. For every leg, enter its exchange lay odds and commission.
  3. 3Lay leg by leg. Place each lay only after the previous leg has won, using the stake the calculator shows.

What powers this

This calculator runs entirely in your browser. It needs no account, key or feed, and nothing you type leaves the page. The maths is the same commodity matched-betting and value arithmetic used across the industry, implemented carefully and unit-tested.

Questions

What do the four methods do?

Standard matches the whole acca return for a small even loss; Standard Free does the same for a free (stake-not-returned) bet; Underlay minimises liability on early legs and breaks even if any leg loses; Underlay Lock In lays the final leg fully to lock in that leg's profit.

How many legs can it handle?

Between two and five. Adding or removing legs updates the lay schedule instantly.

18+ · Data product for licensed operators. Please gamble responsibly.

Building a betting product?

When you need the feed behind the maths, matched and rated, start a free trial or get in touch.