Kayla Day vs Elvina Kalieva Prediction (Sep 13, 2026)
Result: Kayla Day won. We gave Kayla Day 60% before the match, so our pick (Kayla Day) was right.
Brier score (lower is better): ours 0.161, market six hours out 0.116.
| Our model | Kayla Day 60% · Elvina Kalieva 40% |
| Market price at our call | Kayla Day 62% |
| Event | Guadalajara · Clay |
| Scheduled start | Sun Sep 13, 2026, 03:00 PM ET |
| Call logged | 2026-09-12 16:08 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 Guadalajara 2026 predictions · Kayla Day predictions · Elvina Kalieva predictions
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