KalshiCheck availabilityKYC requiredVerified resolution dataWell calibratedSelected book midpoint
David Stevenson / Marcus Willis · —
Loading selected book…
—
Stored price
David Stevenson / Marcus Willis 73.5%
David Stevenson / Marcus Willis 73.5%Market quality
28 / 100
Low quality24h Volume
$696.3
Open interest
$685.4
Low open interestBid / Ask
— / —
David Stevenson / Marcus WillisSpread
—
Market data
Updated 54 minutes ago
LaggingOct 15, 26, 5:50 AM UTCOct 29, 26, 5:40 PM UTC
Chart and changes show stored historical probabilities, not the selected live book.
Trends
Selected row: book midpoint. Other rows: stored references, possibly normalized; 24h changes use stored history.
Venue terms
Source: Kalshi
Informational venue terms only; CoinRithm paper trading uses its own rules.
- Early close:
- Yes
- Settlement timer:
- 1m (informational)
Market depth · David Stevenson / Marcus Willis
Loading selected book…
—
Related Markets
Related questions for context, not a comparison of equivalent contracts.
Hidalgo / Kestelboim vs Roncadelli / Zarate C
KalshiRibero / Villanueva vs Arias / Carou
KalshiAlves / Zormann vs Casanova / Rodriguez Taverna
KalshiAguilar Cardozo / De la Fuente vs Miguel L / Ribeiro
KalshiRoanne (Doubles): Stevenson/Willis vs Balshaw/Martineau
PolymarketRoanne: Felix Balshaw vs Mika Brunold
PolymarketRules
If David Stevenson / Marcus Willis wins the Stevenson / Willis vs Balshaw / Martineau professional tennis match in the 2026 ATP Challenger Roanne Quarterfinal after a ball has been played, then the market resolves to Yes.
Settles via:ATP
- The following market refers to the Stevenson / Willis vs Balshaw / Martineau professional tennis match in the 2026 ATP Challenger Roanne Quarterfinal after a ball has been played. If the match does not occur (signaled by a ball being played) due to a player injury, walkover, forfeiture, or any other cancellation (all before the match starts), the market will resolve to a fair price in accordance with the rules. If this match is postponed or delayed, the market will remain open and close after the rescheduled match has finished (within two weeks). Kalshi is not affiliated, associated, authorized, endorsed by, or in any way officially connected with the Governing League. All trademarks, logos, and brand names are the property of their respective owners.
Rules for each outcome
- David Stevenson / Marcus Willis
- If David Stevenson / Marcus Willis wins the Stevenson / Willis vs Balshaw / Martineau professional tennis match in the 2026 ATP Challenger Roanne Quarterfinal after a ball has been played, then the market resolves to Yes.
- Felix Balshaw / Matteo Martineau
- If Felix Balshaw / Matteo Martineau wins the Stevenson / Willis vs Balshaw / Martineau professional tennis match in the 2026 ATP Challenger Roanne Quarterfinal after a ball has been played, then the market resolves to Yes.