Kylie Collins vs Valentina Steiner Prediction (Sep 21, 2026)
Result: Valentina Steiner won. We gave Valentina Steiner 45% before the match, so our pick (Kylie Collins) was wrong.
Brier score (lower is better): ours 0.308, market six hours out 0.533.
| Our model | Kylie Collins 55% · Valentina Steiner 45% |
| Market price at our call | Kylie Collins 54% |
| Event | 125K Porto Qualification · Hard |
| Scheduled start | Mon Sep 21, 2026, 09:00 AM ET |
| Call logged | 2026-09-20 22:11 UTC (before first serve) |
Every call we make is logged before the match and graded after it. See the live tennis board, the full match list and our public track record.
All WTA 125 Porto Qualification 2026 predictions
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