You’re losing track, and it’s killing your edge
Every time you scroll past a box‑score and shrug, a dollar slips through the cracks. Ignoring data is like playing roulette with a blindfold. You need hard numbers, not gut feelings.
Set up a battle‑ready spreadsheet
Grab Excel or Google Sheets, slap three columns: Prop, Stake, Outcome. Throw in a fourth for “ROI %”. No fancy formulas, just raw arithmetic. Your win‑loss record lives here, period.
Don’t over‑complicate with widgets
Conditional formatting? Sure, but keep it simple—green for wins, red for busts. Anything more looks like a spreadsheet trying to be a casino floor.
Log every prop, no matter how small
Even the “point‑over” on a bench player matters. Those micro‑edges pile up. Skipping them is a cardinal sin. Write it down immediately; don’t trust memory.
Calculate ROI after each game
Formula: (Profit ÷ Total Stake) × 100. If you bet $200 and net $30, your ROI is 15%. Anything below zero? Re‑evaluate the line.
Track trends, not isolated wins
Look for patterns: “LeBron over on nights when the Lakers cover the spread” – that’s a signal. Group data by player, by team, by venue. The devil’s in the details.
Use the “rolling window” technique
Thirty‑day rolling ROI smooths out volatility. A sudden spike feels less like luck, more like skill. If the 30‑day ROI hovers under 5%, it’s a red flag.
Benchmark against the market
Head to bettingnbaplayers.com for community averages. If the crowd is hitting -2% on a prop you’re +4%, you might be onto something.
Factor in confidence levels
Assign a confidence rating (1‑5) to each prop. High confidence, low stake? Maybe you’re over‑confident. Low confidence, high stake? That’s reckless.
Adjust for variance
Standard deviation tells you how wild your results are. A high sigma means your edge is shaky; tighten those bets.
Review weekly, act monthly
Spend 15 minutes every Sunday to tally the week. Then, every 30 days, prune the losers, double down on the winners. Consistency beats brilliance.