Percentage return on your total wagered amount
ROI (Return on Investment) measures the efficiency of your betting strategy by calculating the percentage return on the total amount you wagered. Formula: ROI = (Net Profit ÷ Total Wagered) × 100%. Unlike simple profit/loss which shows absolute gains, ROI shows relative performance - how much you gained per dollar risked. A positive ROI means profitable strategy, negative ROI means losing strategy. Even small positive ROI (2-5%) can be excellent if sustained over hundreds of rounds.
You wager $1000 total across 50 rounds (average $20/round). You end with $1080. Net profit = $80. ROI = ($80 ÷ $1000) × 100% = 8% ROI. This is excellent - it means every dollar you bet returned $1.08 on average. Compare to -15% ROI losing strategy.
Target ROI depends on risk level: Conservative strategies aim for 3-8% ROI with low volatility. Moderate strategies target 5-15% ROI. Aggressive strategies might aim for 15-30% ROI but with higher variance. Anything above 10% sustained ROI is exceptional performance.