Catherine McNally vs Iga Swiatek prediction for May 9, 2026: Our Monte Carlo simulation ran 10,000 game iterations and projects Iga Swiatek 0 - Catherine McNally 0. Iga Swiatek is favored with a 81.3% win probability.
Iga Swiatek
2042
Clay Elo
VS
Clay • WTA
Catherine McNally
1487
Clay Elo
Match Win Probability
Iga SwiatekCatherine McNally
Clay
Surface
Internazionali BNL d'Italia
Tournament
10,000
Simulations
Calibrated accuracy at this confidence: 60.6% (1,806 games)
Match Context
Tournament
Internazionali BNL d'Italia
Surface
Clay
Format
Best of 3 · WTA
Surface Elo Ratings (Clay)
Catherine McNally
Iga Swiatek
Iga Swiatek leads by 555 Elo points on Clay
Serve & Return Analysis
Serve Points Won % (SPW) is the single most predictive metric in tennis. WTA average on Clay: 56.5%
Catherine McNally SPW
51.0%
Below tour avg
Iga Swiatek SPW
63.2%
Above tour avg
● Iga Swiatek has a significant serve advantage (+12.1%)
Market Odds & Model Edge
Catherine McNally ML
+700
Model: 19%
Edge: +6.2%
Iga Swiatek ML
-1200
Model: 81%
Edge: -11.0%
Model Projection
Catherine McNally ML +700 · +6.2% edge
Key Matchup Factors
- Iga Swiatek holds a commanding 555-point Elo advantage on Clay
- Clay surface reduces serve dominance — expect more breaks of serve and longer rallies
- Iga Swiatek has the stronger serve profile on this surface
- Heavy favorite (Iga Swiatek at 81%) — ML value may be limited; consider live or set markets
Surface Elo v1.0 · Barnett-Clarke serve model · 10,000 simulations · WTA
Edge Analysis
Moneyline
Iga Swiatek 81.3%
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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 →