Kelly sizing, calibration, CLV, and bankroll management — in one Google Sheet you make your own. Add your bookmakers, sports, bet types, and sources. The stats adapt to your setup. Built by a semi-professional bettor, used daily across horse racing, football, and prediction markets. $99.99 once. No subscription.
You've probably tried three or four of them. A YouTuber's free spreadsheet. A Gumroad template that looks pretty and breaks when you add commission. A SaaS that charges $15 a month to let you fill in what you bet on.
They all miss the same thing: betting is a probability problem, not a data-entry problem.
Tracking stakes and outcomes tells you whether you're up or down this month. That's the easy question. What you actually need to know is whether your edge is real — whether the number you call your fair odds is anywhere near the truth.
Most trackers skip this. This one does not.
Every bet logged in 30 seconds. Add your own bookmakers, sports, bet types, and sources — up to 300 per category — and the dropdowns, stats, and CLV breakdowns all adapt. Commission handling for Betfair and other exchanges.
Aggregates your balances and unsettled bets into a single live bankroll. You pick your Kelly fraction. When you have a genuine read on odds and edge, the tab plans the stake. It doesn't stake for you, and it doesn't pretend to know your edge — that part is on you.
ROI, yield, hit rate, profit broken down by sport, bet type, and source. Filtering by date range, category, or any combination. Your current win/loss position at a glance.
Deposits, withdrawals, running balance per bookmaker, drawdown tracking, bonus credit accounting. The boring tab that quietly tells you whether you can actually afford the stake you just typed.
And then there's the fifth tab — the one most trackers skip. See below.
The calibration tab is what most trackers don't have. It uses your fair odds — the price you think a bet should be — and compares it to what actually happened.
You enter your fair odds when you place the bet. The sheet does the rest. After 50 bets, you have a real, statistical picture of whether your probability estimates are honest. After 200, you know exactly which categories you're sharp in and which you're flattering yourself about.
Brier score, reliability plot against a 45° calibration line, plain-language verdict, and breakdowns by sport, bet type, and source.
A stylized illustration of seven bets — the columns, the dropdowns, the outcome codes. The actual sheet looks like a sheet: denser, less polished, but the structure is the same. Lay commission, Asian Handicap half-bets, pushes and refunds — all handled.
| Date | Event | Stake | Odds | Result | Profit |
|---|---|---|---|---|---|
| 03/02 | Man City vs Burnley (Man City Win) | £300 | 1.85 | Won | +£255 |
| 03/03 | Aintree 15:30 Lucky Star | £150 | 4.50 | Won | +£525 |
| 03/05 | Djokovic vs Rublev | £300 | 1.65 | Won | +£195 |
| 03/08 | Newmarket 14:00 Golden Arrow | £100 | 6.00 | Lost | −£100 |
| 03/12 | Lay Chelsea Win (vs Everton) | £150 | 4.50 | Lay won | +£142.50 |
| 03/18 | Liverpool −0.25 AH vs Brentford | £300 | 1.95 | ½ Won | +£142.50 |
| 04/18 | Arsenal vs Spurs (Arsenal Win) | £250 | 2.60 | Pending | — |
The Long Edge is a practitioner's manual on betting as a craft. It covers the things that actually determine whether you're still doing this profitably in five years:
I've used this tracker myself for years across Scandinavian, UK & Irish, Hong Kong, UAE, German, and French horse racing, plus selective football, tennis, golf, and winter sports — and other bad habits. It's been refined a hundred small ways since I first sat down with a blank sheet.
Could I have built a SaaS instead? Probably. Did I want to? No. SaaS for bet tracking locks you into someone else's categories, someone else's bet types, someone else's idea of what matters. A spreadsheet you own adapts to how you actually think about your book. That's why this is a template, not an app.
A spreadsheet is what I want. Mine lives as a pinned tab in my browser, always one click away. That's how this product is meant to be used — pinned tab on a real screen, or open in Excel locally if you'd rather spend the RAM. It's not optimized for mobile and won't be. If your workflow is mobile-first, this isn't your tracker, and that's fine.
I run MrWorldPool — a betting product for serious horse racing pools — and through that work I noticed how often people who ask about my process get tripped up by the same thing: they don't have a tracker they actually trust. So I decided to publish mine.
It's not a course. It's not a Discord. It's not a newsletter. It's the spreadsheet I use myself, cleaned up and shipped.