Betting Record Keeping: The Spreadsheet Columns That Actually Matter

Why results alone are not enough

A win-loss record tells you what happened. It does not tell you whether your process was good. A bettor can win several bad bets in a row or lose several good bets in a row. Record keeping is useful because it separates outcome noise from repeatable decision quality.

The most important fields are the ones that let you review the price you took. Stake, odds, closing line, market, sport, book, and timestamp give you a factual trail. Notes explain why you believed the price was wrong when you placed the bet.

Core columns for a betting log

A simple spreadsheet is enough. Track date, event, market, selection, odds, stake, sportsbook, result, profit or loss, closing line, and notes. If you model probabilities, add your projected probability and fair line. If you use units, record both dollars and units so bankroll changes do not distort performance.

Closing line is especially useful because it measures whether your bet beat the final market price. It is not perfect, but consistently beating the close is one of the better signs that your process is finding value before the broader market adjusts.

• Date and time placed
• Sport, league, event, and market
• Selection, odds, stake, and sportsbook
• Projected probability and fair price
• Closing line and result
• Profit or loss in dollars and units
• Short note explaining the thesis

How to review the log

Review by bet type, not just total profit. Split pregame from live bets, favorites from underdogs, sides from totals, props from futures, and single bets from parlays. Most bettors discover that a few categories create most of the damage.

Do not overreact to tiny samples. A month of low-volume betting can be dominated by variance. Look for repeated leaks: taking worse prices than the close, oversizing low-edge bets, chasing after losses, and betting markets you cannot explain in one sentence.

What a good note looks like

A good note is specific enough that you can judge it later. 'Team is hot' is not useful. 'Projected pace is three possessions higher than market because both teams rank top ten in early-clock attempts and injury report removes two rim protectors' is reviewable.

The goal is not to write an essay for every wager. The goal is to create a habit: no thesis, no bet. That one rule eliminates a surprising amount of low-quality action.