Matteo Arnaldi vs Toby Samuel prediction for June 21, 2026: Our Monte Carlo simulation ran 10,000 game iterations and projects Toby Samuel 0 - Matteo Arnaldi 0. Toby Samuel is favored with a 58.8% win probability.
Toby Samuel
1671
Grass Elo
VS
Grass • ATP
Matteo Arnaldi
1471
Grass Elo
Match Win Probability
Toby SamuelMatteo Arnaldi
Grass
Surface
Eastbourne
Tournament
10,000
Simulations
Calibrated accuracy at this confidence: 55.3% (5,978 games)
Match Context
Tournament
Eastbourne
Surface
Grass
Format
Best of 3 · ATP
Surface Elo Ratings (Grass)
Matteo Arnaldi
Toby Samuel
Toby Samuel leads by 199 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%
Matteo Arnaldi SPW
66.1%
Above tour avg
Toby Samuel SPW
66.4%
Above tour avg
● Serve statistics are nearly identical — expect a close match
Market Odds & Model Edge
Matteo Arnaldi ML
+108
Model: 41%
Edge: -6.8%
Toby Samuel ML
-126
Model: 59%
Edge: +3.0%
Key Matchup Factors
- Toby Samuel holds a commanding 199-point Elo advantage on Grass
- Grass surface amplifies serve advantage — expect fewer breaks, more tiebreaks
- Toby Samuel has the stronger serve profile on this surface
Surface Elo v1.0 · Barnett-Clarke serve model · 10,000 simulations · ATP
Edge Analysis
Moneyline
Toby Samuel 58.8%
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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 →