Janice Tjen vs Catherine McNally prediction for June 23, 2026: Our Monte Carlo simulation ran 10,000 game iterations and projects Catherine McNally 0 - Janice Tjen 0. Catherine McNally is favored with a 61.5% win probability.
Catherine McNally
1578
Grass Elo
VS
Grass • WTA
Janice Tjen
1528
Grass Elo
Match Win Probability
Catherine McNallyJanice Tjen
Grass
Surface
Lexus Eastbourne Open
Tournament
10,000
Simulations
Calibrated accuracy at this confidence: 56.5% (6,309 games)
Match Context
Tournament
Lexus Eastbourne Open
Surface
Grass
Format
Best of 3 · WTA
Surface Elo Ratings (Grass)
Janice Tjen
Catherine McNally
Catherine McNally leads by 51 Elo points on Grass
Serve & Return Analysis
Serve Points Won % (SPW) is the single most predictive metric in tennis. WTA average on Grass: 56.5%
Janice Tjen SPW
55.3%
Below tour avg
Catherine McNally SPW
58.1%
Above tour avg
● Catherine McNally has a slight serve edge (+2.8%)
Key Matchup Factors
- Catherine McNally has a moderate 51-point Elo edge on Grass
- Grass surface amplifies serve advantage — expect fewer breaks, more tiebreaks
- Catherine McNally has the stronger serve profile on this surface
Surface Elo v1.0 · Barnett-Clarke serve model · 10,000 simulations · WTA
Edge Analysis
Moneyline
Catherine McNally 61.5%
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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 →