Term
Return on InvestmentROI
Total profit divided by total stake — the headline output metric.
Definition
Return on Investment (ROI) in sports betting is total net profit divided by total amount staked, expressed as a percentage. Unlike win rate, ROI accounts for the odds at which each bet was placed — a 40% win rate on odds of 3.00 still produces +20% ROI. It is a 25-point component of the Bettor Score.
Example
Stake $1,000 across 100 bets averaging $10 each. Total profit at settlement = +$140. ROI = 140 / 1000 = +14%. A 75-pt Bettor Score generally requires sustained ROI above +5% over the minimum 25 picks.
Why it matters
ROI is the most intuitive measure of profitability and one of the two heaviest-weighted Bettor Score components. CLV predicts future ROI; ROI confirms past edge.
Related terms
Closing Line ValueCLV
The difference between the odds you locked when placing a bet and the market closing odds — positive CLV signals a real edge.
Edge
The percentage difference between your estimated probability of an outcome and the sportsbook’s implied probability from the offered odds.
Bettor Score
A 0–100 composite metric measuring betting skill across five weighted components — ROI, CLV, volume, variance control, and edge factor.
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