Tennis Arbitrage Calculator

In the volatile world of sports betting, Arbitrage (or “Arbing”) is the only mathematical strategy that guarantees a profit regardless of the match outcome. Tennis is the “Holy Grail” for arbitrage bettors because there are no draws — only two possible outcomes (Player A wins or Player B wins).

However, calculating the exact stakes required to balance your profit across two different bookmakers requires precision. Our Tennis Arbitrage Calculator does the heavy math for you instantly. Simply enter your total bankroll and the odds from two different sportsbooks, and the tool will tell you exactly how much to bet on each side to lock in a risk-free return.

How to Use the Calculator

Speed is essential in arbitrage betting. Follow these steps to calculate your stakes before the odds shift:

1. Enter Total Investment: Input the total amount of money you are willing to risk for this specific trade (e.g., $1,000).
2. Input Odds for Bookmaker A: Enter the highest odds available for Player 1 (e.g., 1.65).
3. Input Odds for Bookmaker B: Enter the highest odds available for Player 2 at a different sportsbook (e.g., 2.80).
4. Check the Status:
   • If the result box turns GREEN, you have found a Surebet. The tool will show you the exact profit and ROI.
   • If the box remains gray, there is no arbitrage opportunity (the bookmaker margin is positive).
5. Distribute Stakes: Look at the “Bet this amount” values under each bookmaker. Place these exact bets immediately.

The “Tennis Trap”: Retirement Rules

Unlike football or basketball, tennis has a unique risk factor for arbitrageurs: Player Retirements. If a player gets injured and quits mid-match, bookmakers settle bets differently.

• The Risk: If Bookie A (where you bet on the winner) voids the bet, but Bookie B (where you bet on the loser) counts it as a loss because 1 set was completed, you lose money.
• The Solution: Always ensure both bookmakers share the same retirement rules (e.g., both use “1 Set Completed” or both use “Full Match Only”) before placing an arb.

Real-World Examples: Calculating the Edge

How does an arbitrage opportunity look in practice? Here are two scenarios:

Example 1: The Profitable Surebet

You find a discrepancy between Pinnacle and Bet365 for a match between Sinner and Alcaraz.

• Odds: Sinner is 2.10 (Bookie A) and Alcaraz is 2.05 (Bookie B).
• Investment: $1,000.
• Calculation:
  • Bet $493.98 on Sinner @ 2.10.
  • Bet $506.02 on Alcaraz @ 2.05.
• Result: No matter who wins, your return is roughly $1,037. You made a $37 profit (3.7% ROI) instantly without risk.

Example 2: The “Fake” Arb (Negative Margin)

Sometimes odds look good but don’t guarantee profit.

• Odds: Player A is 1.40 and Player B is 3.00.
• Analysis:
  • Implied Probability for A: 71.4%.
  • Implied Probability for B: 33.3%.
  • Total Market Sum: 104.7%.
• Result: The calculator will show a negative margin. This is not a surebet; it is a standard gamble where the bookmaker has the edge.

Frequently Asked Questions (FAQ)