# Will Sara Errani / Lilli Tagger win the Perez / Schuurs vs Errani / Tagger

> Liquidity-weighted aggregate at 28% across 20 contracts — refreshed 23 min ago.

URL: https://simplefunctions.dev/odds/wtadoubles
Updated: 2026-05-28T20:20:07.416Z
Category: general
Status: active
Closes: 2026-06-12

## Headline

- Probability: 28% (liquidity-weighted across 20 contracts)
- Venue: Kalshi (20 contracts)
- 24h volume: $2K

## Bound contracts (20)

| Outcome | Price | 24h | Volume | Venue | Slug |
|---|---|---|---|---|---|
| Round Of 32 match?: Katerina Siniakova / Taylor Townsend | 87¢ | +8pp | $643 | kalshi | /markets/will-katerina-siniakova-taylor-townsend-win-the-si-kalshi-kxwtadoubles-26may29sintowarajov-sintow |
| Round Of 32 match?: Emiliana Arango / Iva Jovic | 4¢ | +12pp | $603 | kalshi | /markets/will-emiliana-arango-iva-jovic-win-the-siniakova-t-kalshi-kxwtadoubles-26may29sintowarajov-arajov |
| Round Of 32 match?: Tatjana Maria / Zeynep Sonmez | 29¢ | +2pp | $185 | kalshi | /markets/will-tatjana-maria-zeynep-sonmez-win-the-kalinina-kalshi-kxwtadoubles-26may29kalyasmarson-marson |
| Round Of 32 match?: Anhelina Kalinina / Dayana Yastremska | 64¢ | +2pp | $147 | kalshi | /markets/will-anhelina-kalinina-dayana-yastremska-win-the-k-kalshi-kxwtadoubles-26may29kalyasmarson-kalyas |
| Round Of 32 match?: Jelena Ostapenko / Erin Routliffe | 62¢ | ±0 | $1 | kalshi | /markets/will-jelena-ostapenko-erin-routliffe-win-the-ostap-kalshi-kxwtadoubles-26may29ostrouaoylia-ostrou |
| Round Of 32 match?: Gabriela Dabrowski / Luisa Stefani | 76¢ | +3pp | $1 | kalshi | /markets/will-gabriela-dabrowski-luisa-stefani-win-the-dabr-kalshi-kxwtadoubles-26may29dabstepritan-dabste |
| Round Of 32 match?: Marie Bouzkova / Sara Sorribes Tormo | 4¢ | — | $0 | kalshi | /markets/will-marie-bouzkova-sara-sorribes-tormo-win-the-bo-kalshi-kxwtadoubles-26may29bousorhadsam-bousor |
| Round Of 32 match?: Beatriz Haddad Maia / Liudmila Samsonova | 4¢ | — | $0 | kalshi | /markets/will-beatriz-haddad-maia-liudmila-samsonova-win-th-kalshi-kxwtadoubles-26may29bousorhadsam-hadsam |
| Round Of 32 match?: Eudice Chong / Veronika Erjavec | 4¢ | — | $0 | kalshi | /markets/will-eudice-chong-veronika-erjavec-win-the-chong-e-kalshi-kxwtadoubles-26may29choerjhunmcc-choerj |
| Round Of 32 match?: Storm Hunter / Caty McNally | 4¢ | — | $0 | kalshi | /markets/will-storm-hunter-caty-mcnally-win-the-chong-erjav-kalshi-kxwtadoubles-26may29choerjhunmcc-hunmcc |
| Round Of 32 match?: Elena Pridankina / Qianhui Tang | 14¢ | ±0 | $0 | kalshi | /markets/will-elena-pridankina-qianhui-tang-win-the-dabrows-kalshi-kxwtadoubles-26may29dabstepritan-pritan |
| Round Of 32 match?: Anastasia Detiuc / Irina Khromacheva | 4¢ | — | $0 | kalshi | /markets/will-anastasia-detiuc-irina-khromacheva-win-the-de-kalshi-kxwtadoubles-26may29detkhreikgle-detkhr |
| Round Of 32 match?: Ulrikke Eikeri / Quinn Gleason | 4¢ | — | $0 | kalshi | /markets/will-ulrikke-eikeri-quinn-gleason-win-the-detiuc-k-kalshi-kxwtadoubles-26may29detkhreikgle-eikgle |
| Round Of 32 match?: Hanyu Guo / Kristina Mladenovic | 42¢ | +7pp | $0 | kalshi | /markets/will-hanyu-guo-kristina-mladenovic-win-the-guo-mla-kalshi-kxwtadoubles-26may29guomlahsiwan-guomla |
| Round Of 32 match?: Su-Wei Hsieh / Xinyu Wang | 21¢ | +4pp | $0 | kalshi | /markets/will-su-wei-hsieh-xinyu-wang-win-the-guo-mladenovi-kalshi-kxwtadoubles-26may29guomlahsiwan-hsiwan |
| Round Of 32 match?: Anna Danilina / Aleksandra Krunic | 5¢ | — | $0 | kalshi | /markets/will-anna-danilina-aleksandra-krunic-win-the-joint-kalshi-kxwtadoubles-26may29joivandanka-danka |
| Round Of 32 match?: Maya Joint / Hanne Vandewinkel | 4¢ | — | $0 | kalshi | /markets/will-maya-joint-hanne-vandewinkel-win-the-joint-va-kalshi-kxwtadoubles-26may29joivandanka-joivan |
| Round Of 32 match?: Shuko Aoyama / En-Shuo Liang | 28¢ | +1pp | $0 | kalshi | /markets/will-shuko-aoyama-en-shuo-liang-win-the-ostapenko-kalshi-kxwtadoubles-26may29ostrouaoylia-aoylia |
| Round Of 32 match?: Sara Errani / Lilli Tagger | 32¢ | +1pp | $0 | kalshi | /markets/will-sara-errani-lilli-tagger-win-the-perez-schuur-kalshi-kxwtadoubles-26may29perscherrtag-errtag |
| Round Of 32 match?: Ellen Perez / Demi Schuurs | 58¢ | +2pp | $0 | kalshi | /markets/will-ellen-perez-demi-schuurs-win-the-perez-schuur-kalshi-kxwtadoubles-26may29perscherrtag-persch |

## 30-day trajectory

| Day | Aggregate |
|---|---|
| 2026-05-26 | 5 |
| 2026-05-27 | 6 |
| 2026-05-28 | 9 |

_3 days of price history captured. Each row is the daily mean of intraday 5-min captures._

## What moved the line

- 2026-05-28 · Round Of 32 match?: Emiliana Arango / Iva Jovic +12pp 5→17¢ · kalshi
- 2026-05-28 · Round Of 32 match?: Katerina Siniakova / Taylor Townsend +8pp 7→15¢ · kalshi
- 2026-05-27 · Round Of 32 match?: Hanyu Guo / Kristina Mladenovic +7pp 5→12¢ · kalshi
- 2026-05-27 · Round Of 32 match?: Su-Wei Hsieh / Xinyu Wang +4pp 5→9¢ · kalshi
- 2026-05-28 · Round Of 32 match?: Gabriela Dabrowski / Luisa Stefani +3pp 5→8¢ · kalshi

## Analysis

This market reflects an 8% probability that Sara Errani and Lilli Tagger will defeat Perez and Schuurs in their upcoming doubles match. The low odds suggest market participants view Errani/Tagger as significant underdogs, likely reflecting differences in player rankings, recent form, or head-to-head records. The probability could shift higher if recent tournament results or rankings indicate Errani/Tagger are performing better than expected, or lower if Perez/Schuurs demonstrate strong recent form leading into the match. The match outcome will resolve when the contest is completed, with the winner advancing and the loser eliminated from the tournament.

### Key factors

- Current ATP/WTA doubles rankings and recent ranking trends for all four players
- Head-to-head match history between the Perez/Schuurs pairing and the Errani/Tagger pairing if available
- Tournament performance and win-loss records in doubles competitions during the current season for both teams
- Recent surface performance, as doubles dynamics and player comfort vary significantly by court type
- Injury status or recent absences of any of the four players that might affect match preparation or fitness

## Methodology

Probability is **liquidity-weighted** across all bound Kalshi/Polymarket contracts: Σ(price × volume) ÷ Σ(volume). 30-day trajectory uses the daily mean of intraday 5-min captures. 24h delta = today's mean − yesterday's mean. Movement events are ≥3pp daily moves in the last 7 days.

## How to use this data

- HTML: https://simplefunctions.dev/odds/wtadoubles
- JSON: https://simplefunctions.dev/api/public/odds?slug=wtadoubles

## License

CC-BY-4.0. Attribute "SimpleFunctions" with a link to https://simplefunctions.dev. See https://simplefunctions.dev/legal for terms.