Estimated outcome probability. A likely winner can still be overpriced.
← Decision briefsTennis · Oct 16, 10:40 AM PDT YOUR RESEARCH TASK FORECASTPending RELIABILITY4/4 model reports MARKET VALUENot established
Lucrezia Stefanini vs Bianca Andreescu
—No winner forecast available
LOCKED Oct 16, 10:01 AM PDT3/4 models published a direction, but no side earned a three-model majority.
Check the evidence
The most important gap and your next source check.
- Read the model reasons and reported limits.
- Inspect available source context; record missing sources.
- Identify what remains unverified and your next action.
20 reported evidence limits. Agreement alone does not establish accuracy.
A probability difference alone does not account for forecast error, fees, spread, or available liquidity.
Why the models lean this way
These are reasons recorded by the models. They are not independently verified facts or measured causes of a probability change.
- Gemini: Bianca Andreescu has a season record of 29 wins and 17 losses.
- Claude: Stefanini verified rank 106, improved from 125 (717 points) — trending upward
- Grok: Stefanini current rank 106
- GPT: Bianca Andreescu has a 29-17 2026 singles record, indicating a solid winning season.
Read all four model reports
Gemini · Bianca Andreescu · 62.0%
Bianca Andreescu has a solid season record with 29 wins and 17 losses, indicating a strong level of play and consistency on the tour. Lucrezia Stefanini is ranked 106th, which typically reflects a player who may struggle to consistently win matches at the main-tour level. Although the data is asymmetric (win-loss record vs. ranking), Andreescu's proven ability to accumulate 29 wins suggests she is the favorite against a player outside the top 100. Surface form, injuries, head-to-head, travel, and market odds are unavailable, which limits the precision of this forecast.
google/gemini-3.1-pro-preview · Oct 15, 5:02 PM PDTClaude · Bianca Andreescu · 53.0%
The evidence package supports only a near-coin-flip. Stefanini has a verified current rank of 106 with clear upward movement (previous 125) and 717 points, plus the match is in Italy, her home country. Andreescu has no supplied ranking at all, only a 2026 singles record of 29-17 (63% win rate, 0 titles), which indicates a productive but title-less season at an unspecified level of competition. The winning record and the fact that a player of her profile is competing deep into this draw slightly favor her, but with no ranking, no surface form, no head-to-head, no injury status, no travel detail, and no market odds, there is no basis for a confident separation. I therefore shade marginally to Andreescu while treating the matchup as close to even.
anthropic/claude-opus-5 · Oct 15, 5:02 PM PDTGrok · No selection
Evidence supplies Stefanini rank 106 with 717 points but null win-loss, and Andreescu 29-17 record with null rank. No basis exists to assign >50% probability to either without external assumptions. Surface form, injuries, head-to-head, travel, and market odds are unavailable as not supplied in evidence scope.
xai/grok-4.3 · Oct 15, 5:02 PM PDTGPT · Bianca Andreescu · 56.0%
Using only the supplied evidence, Bianca Andreescu is a narrow favorite. The evidence package provides Stefanini's current WTA rank (No. 106, improved from No. 125) and Andreescu's 2026 season singles record (29-17). Because the package explicitly limits evidence to current ranking and season singles record only, the comparison is incomplete: Stefanini's season record is unavailable and Andreescu's current rank is unavailable. Even so, the pipeline confirms each player has at least one usable current indicator, so an evidence-bounded estimate is still required. Andreescu's 29 wins indicate substantial match activity and a solid winning season, while Stefanini's ranking of 106 shows competitive standing but not enough by itself to clearly outweigh Andreescu's season record. With one meaningful indicator favoring each player's profile type and no direct way to normalize them, the fairest,,
openai/gpt-5.4 · Oct 15, 5:02 PM PDTWhat remains uncertain
- Surface form, injuries, head-to-head, travel, and market odds are unavailable.
- The lack of a ranking for Andreescu and a win-loss record for Stefanini prevents a direct statistical comparison.
- Head-to-head record not supplied
- Surface-specific form and recent match-by-match results unavailable
- Injury and fitness status unavailable for both players
- Travel, rest days, and scheduling context unavailable
- No market odds or implied probabilities provided
- Andreescu's current ranking and ranking points are null, and Stefanini's win-loss record is null — asymmetric data
What to watch next
Official result recorded. Review the original forecast and sources below.
Open the event and source context →What changed before the lock
- First recorded forecast
The pre-event probability state was locked atomically and is immutable.
Record hash
1cd3574a1a91b2349c40aa85a9e63fe29248e1dd9b265eabdbc4d34e0593070c - First recorded forecast
First prospective probability state captured for this source and competition.
Record hash
18b7cb533f2bddaf8c7d3c51d3bcfa0e065b7859e94b2ad10b920d9f9cea9bcc
Reasons are shown as they were recorded. The ledger does not establish that a specific fact caused a probability change.
The saved method comparison
This event has no eligible record in the new comparison cohort. Historical or late forecasts are not filled in after the event.
Inspect the methods and progress →Available source context
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These links provide event context. They do not verify every claim in a model report.
Recorded outcome: Bianca Andreescu (CAN) bt (5) Lucrezia Stefanini (ITA) 6-2 7-5
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