The Lab · Foundations · updated 2026-08-02
How to track your sports bets (and what to actually record)
A spreadsheet beats no tracking, an app beats a spreadsheet, and the field almost everyone leaves out is the one that decides whether you're winning. Here's the minimum that works.
Most bettors track nothing, then estimate their record from memory. Memory is a terrible ledger — it keeps the winners and quietly files the losses under bad luck.
If you're going to fix one habit, fix this one. Here's the minimum that actually works, and the field almost everyone skips.
Record these seven things
Per bet, nothing more:
| Field | Why |
|---|---|
| Date | of the game, not when you placed it |
| What you bet | team and market — "Rays ML", "Chiefs −3.5" |
| The price | −110 vs −115 matters more than it looks |
| Where | which book or app |
| Stake | in units and dollars — see below |
| Result | win / loss / push |
| Return | what came back, not just whether it hit |
The price is the one people drop, and it's the one that makes the rest meaningful. A 55% win rate is excellent at +120 and a disaster at −180. Without the number you took, a record of wins and losses can't tell you which you had. If a field ever feels optional, it isn't this one.
Units and dollars are different stories — keep both
A unit is a fixed slice of your bankroll, usually 1%. Tracking in units tells you whether your decisions are good. Tracking in dollars tells you whether your bankroll is growing. Those come apart more often than you'd think.
Here's a real book from our own tracker:
−3.84 units · +$87.00
Both numbers are correct. The record was 3–7. So how is the bankroll up?
One winner had been staked roughly ten times the size of the losing bets. The decisions were losing; a single oversized bet happened to land and dragged the dollars positive. Had it lost, the same 3–7 record would read about −$100.
That is not a rounding artifact. Sizing decides outcomes at least as much as picking does, and a tracker showing only units — or only dollars — hides exactly half of it. Two numbers worth adding once you have a few weeks of data:
- Average winner vs average loser. If your losers are bigger than your winners, you can win most of your bets and still go broke.
- Fees. Exchange and market fees don't appear in the odds. They come out of the same bankroll.
Spreadsheet or app?
A spreadsheet is fine and beats not tracking. You own the data, you can add any column, and it handles bets from anywhere — offshore books, a friend, a local. The cost is discipline: you have to enter every bet, including the ones you'd rather forget, and that's exactly when people stop.
Apps solve the discipline problem by syncing to your sportsbook accounts, so bets land automatically. The trade-offs: several restrict manual entry, so anything outside a supported book is invisible — which quietly makes your record wrong in the same way memory does. Premium tiers generally run $30–40 a month.
Either way, the rule is the same: a record with holes in it isn't a record. The bets you don't log are the ones that would have changed the answer.
The field nobody records: closing line value
Here's the one that separates casual tracking from useful tracking.
Closing line value is the gap between the price you took and the price at kickoff. If you bet +150 and the game closed at +130, you got a better number than the market's final, most-informed answer.
It matters because it works far faster than profit does. Win/loss is nearly a coin flip per bet — it takes thousands of bets before your record separates skill from luck. Closing line value scores every bet against a benchmark instead, so a picture emerges in dozens. It's the standard sharp-bettor yardstick, and the rough bar is beating the close on 60–65% of bets across 200+ wagers.
If your tracker doesn't capture it, add a column for the closing price. Read the closing line for how it works and why it converges so much faster than your profit does.
What tracking still can't tell you
It tells you what happened. It does not tell you whether what happened was good.
A 55% win rate means nothing without knowing the prices you took and what a fair expectation would have been. This is why we built our tracker beside a model that grades every call it makes in public — so your record has something honest to sit next to, on the same games, instead of a number you have to interpret alone.
And no amount of tracking creates an edge. It tells you truthfully whether you have one, which for most people is the more valuable and less comfortable answer.
Start a free tracker → Log bets by hand or tap them straight off the board. Units and dollars, graded automatically, no card.
Model output is informational and entertainment content, not betting or financial advice. If you bet, bet what you can afford to lose.
Log what you actually bet — units and dollars — and see it graded beside a model that publishes every call it makes, wins and losses alike. Free, no card.
Start a free tracker