Billy Harris vs Chak Lam Coleman Wong prediction for May 20, 2026: Our Monte Carlo simulation ran 10,000 game iterations and projects Chak Lam Coleman Wong 0 - Billy Harris 0. Chak Lam Coleman Wong is favored with a 52.7% win probability.
Chak Lam Coleman Wong
1494
Clay Elo
VS
Clay • ATP
Billy Harris
1426
Clay Elo
Match Win Probability
Chak Lam Coleman WongBilly Harris
Clay
Surface
ATP French Open
Tournament
10,000
Simulations
Calibrated accuracy at this confidence: 50.9% (2,463 games)
Match Context
Tournament
ATP French Open
Surface
Clay
Format
Best of 5 · ATP
Surface Elo Ratings (Clay)
Billy Harris
Chak Lam Coleman Wong
Chak Lam Coleman Wong leads by 69 Elo points on Clay
Serve & Return Analysis
Serve Points Won % (SPW) is the single most predictive metric in tennis. ATP average on Clay: 63.5%
Billy Harris SPW
61.7%
Below tour avg
Chak Lam Coleman Wong SPW
62.9%
Below tour avg
● Chak Lam Coleman Wong has a slight serve edge (+1.2%)
Market Odds & Model Edge
Billy Harris ML
+126
Model: 47%
Edge: +3.0%
Chak Lam Coleman Wong ML
-150
Model: 53%
Edge: -7.3%
Key Matchup Factors
- Chak Lam Coleman Wong has a moderate 69-point Elo edge on Clay
- Clay surface reduces serve dominance — expect more breaks of serve and longer rallies
- Chak Lam Coleman Wong has the stronger serve profile on this surface
Surface Elo v1.0 · Barnett-Clarke serve model · 10,000 simulations · ATP
Edge Analysis
Moneyline
Chak Lam Coleman Wong 52.7%
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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. Full methodology →