Jelena Ostapenko to win the Ostapenko vs Seidel
Will Jelena Ostapenko win the Ostapenko vs Seidel: Round Of 128 match is priced at 80¢ on Kalshi. Current book: 79¢ bid, 81¢ ask, 2¢ spread. This page tracks a standalone prediction-market contract.
Price history
80¢ current
+4¢Contract brief
If Jelena Ostapenko wins the Ostapenko vs Seidel professional tennis match in the 2026 French Open Women Singles Round Of 128 after a ball has been played, then the market resolves to Yes.
Outcome
Will Jelena Ostapenko win the Ostapenko vs Seidel: Round Of 128 match
Rank
Standalone
Leader
—
Range
—
Family volume
$6K
Identifier
KXWTAMATCH-26MAY25OSTSEI-OST
May 25, 2026, 9:22 AM UTC · 0m ago
Implied probability
Bid
79¢
Ask
81¢
Spread
2¢
24h volume
$5K
Family rank
Standalone
Standalone contract
Closes
Jun 8, 2026
Family volume
$6K
Orderbook snapshot
79 / 81¢
Contract terms
What resolves this market.
YES condition
If Jelena Ostapenko wins the Ostapenko vs Seidel professional tennis match in the 2026 French Open Women Singles Round Of 128 after a ball has been played, then the market resolves to Yes.
Venue
Kalshi
Closes
Jun 8, 2026
Identifier
KXWTAMATCH-26MAY25OSTSEI-OST
Event family
This market.
The same race as a probability stack: rank, volume, and where this contract sits against the other outcomes.
Total volume
$6K
Outcomes
1
Highest price
Will Jelena Ostapenko win the Ostapenko vs Seidel: Round Of 128 match 80¢
Current share
100%
Indicators
Yield, cliff risk, volatility, and regime.
Regime
neutral
Score
0.5
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How we compute these odds
SimpleFunctions aggregates live prediction-market contracts from Kalshi and Polymarket. Each slug groups contracts that resolve on the same underlying event, identified by venue event_id.
For binary slugs, the headline probability is the liquidity-weighted mid-price across all bound contracts. For multi-outcome slugs (e.g. elections with 3+ candidates), the headline is the leader’s price; we never arithmetically average disjoint outcomes — that would produce a number with no real-world meaning.
Snapshots refresh every 5 minutes during market hours; daily aggregates are computed at 04:00 UTC. The 30-day sparkline is drawn from per-ticker daily means stored in market_indicator_daily; 24h delta and movement events are derived from the same source.