Gabriel Diallo vs Terence Atmane prediction for June 21, 2026: Our Monte Carlo simulation ran 10,000 game iterations and projects Terence Atmane 0 - Gabriel Diallo 0. Gabriel Diallo is favored with a 57.6% win probability.
Terence Atmane
1465
Grass Elo
VS
Grass • ATP
Gabriel Diallo
1600
Grass Elo
Match Win Probability
Terence AtmaneGabriel Diallo
Grass
Surface
Eastbourne
Tournament
10,000
Simulations
Calibrated accuracy at this confidence: 55.2% (5,978 games)
Match Context
Tournament
Eastbourne
Surface
Grass
Format
Best of 3 · ATP
Surface Elo Ratings (Grass)
Gabriel Diallo
Terence Atmane
Gabriel Diallo leads by 135 Elo points on Grass
Serve & Return Analysis
Serve Points Won % (SPW) is the single most predictive metric in tennis. ATP average on Grass: 63.5%
Gabriel Diallo SPW
66.3%
Above tour avg
Terence Atmane SPW
64.2%
Above tour avg
● Gabriel Diallo has a slight serve edge (+2.1%)
Market Odds & Model Edge
Gabriel Diallo ML
-135
Model: 58%
Edge: +0.2%
Terence Atmane ML
+118
Model: 42%
Edge: -3.5%
Key Matchup Factors
- Gabriel Diallo holds a commanding 135-point Elo advantage on Grass
- Grass surface amplifies serve advantage — expect fewer breaks, more tiebreaks
- Gabriel Diallo has the stronger serve profile on this surface
Surface Elo v1.0 · Barnett-Clarke serve model · 10,000 simulations · ATP
Edge Analysis
Moneyline
Gabriel Diallo 57.6%
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How this prediction was generated: This page shows output from the Olympus Bets ATP/WTA Tennis Monte Carlo engine. Each game is simulated 10,000 times using real-time team data, injury reports, and current odds. Probabilities are calibrated using Bayesian methods and sized via the Kelly Criterion. Probabilities are calibrated using Bayesian methods and sized via the Kelly Criterion. Full methodology →