9% — Will Victoria Mboko win a Tennis Grand Slam in 2026
Kalshi 9% · 10 contracts · $172 volume · medium confidence
Updated 2026-07-27 08:01:14 UTC

Why this matters:
This 20% probability reflects the market's assessment that Victoria Mboko will win at least one Grand Slam tournament in 2026. The relatively low odds reflect both her current ranking outside the top contenders and the general difficulty of winning a Grand Slam, where only a handful of players typically contend each year. Market probability could shift based on Mboko's performance during the 2026 Grand Slam tournaments (Australian Open in January, French Open in May/June, Wimbledon in June/July, US Open in August/September) and how her current form compares to established champions. The main catalyst for resolution is the completion of all four Grand Slam events throughout 2026, with each tournament representing a significant opportunity to either confirm or reduce her winning chances.

Key factors:
- Mboko's current ranking and recent performance trend heading into 2026 Grand Slam season
- Head-to-head competitive positioning against established tour winners and other rising players in her draw
- Completion of all four Grand Slam tournaments throughout 2026, with early results informing market expectations for later events
- Injury status and playing schedule consistency across the full calendar year
- Relative market pricing of other young players like Mirra Andreeva (8¢) versus Mboko (20¢) as indicators of perceived competitive gap

Contracts:
- Will Coco Gauff win a Tennis Grand Slam in 2026?: Coco Gauff — 7¢ Kalshi $169 (weight 98%)
- Will Aryna Sabalenka win a Tennis Grand Slam in 2026?: Aryna Sabalenka — 19¢ Kalshi $3 (weight 2%)
- Will Ekaterina Alexandrova win a Tennis Grand Slam in 2026?: Ekaterina Alexandrova — 6¢ Kalshi $0 (weight 0%)
- Will Iga Swiatek win a Tennis Grand Slam in 2026?: Iga Swiatek — 8¢ Kalshi $0 (weight 0%)
- Will Iva Jovic win a Tennis Grand Slam in 2026?: Iva Jovic — 3¢ Kalshi $0 (weight 0%)
- Will Jasmine Paolini win a Tennis Grand Slam in 2026?: Jasmine Paolini — 23¢ Kalshi $0 (weight 0%)
- Will Jessica Pegula win a Tennis Grand Slam in 2026?: Jessica Pegula — 5¢ Kalshi $0 (weight 0%)
- Will Leylah Fernandez win a Tennis Grand Slam in 2026?: Leylah Fernandez — 10¢ Kalshi $0 (weight 0%)
- ... and 2 more

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## Methodology

SimpleFunctions aggregates live YES-side prices from Kalshi and Polymarket contracts bound to this question. For binary topics the headline is the liquidity-weighted mid-price (weight = log(1 + 24h volume) × freshness, where freshness is 1.0 if updated <24h, 0.7 if <7d, 0.4 otherwise). For multi-outcome (winner-take-all) topics the headline is the current leader's price — disjoint outcomes are never arithmetically averaged. Snapshots refresh every 5 minutes during market hours.

## SF Signal

- SF Index, regime, and 30d Brier calibration are computed separately and surfaced at https://simplefunctions.dev/admin/calibration.
- No SimpleFunctions index / regime / calibration signal is bound to this topic yet — the headline above is market-derived only.

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*Last verified: 2026-07-27T07:20:50.573Z*

By SimpleFunctions — https://simplefunctions.dev/

Cite as: "9% per prediction markets (SimpleFunctions, July 2026)"
Canonical: https://simplefunctions.dev/answer/wtagrandslam
Full data: https://simplefunctions.dev/api/public/query?q=Will%20Victoria%20Mboko%20win%20a%20Tennis%20Grand%20Slam%20in%202026
Provider: SimpleFunctions — https://simplefunctions.dev