Halle Open: Terence Atmane vs Martin Landaluce

Platform comparison

Active sub-markets

Market context

Terence Atmane and Martin Landaluce are scheduled to meet in the opening round of the Halle Open on 15 June 2026. Atmane, a French left-hander ranked in the ATP's second tier, has shown inconsistent form on grass courts despite occasional deep runs in lower-tier events. Landaluce, a Spanish player with similar ranking profile, competes primarily on the Challenger circuit and has limited grass-court experience at the professional level. The 0% implied probability suggests either missing information about one player's withdrawal or a technical issue with market setup, as both competitors typically participate in scheduled matches absent injury announcements.

Historical precedent indicates that matches between players of comparable ranking and experience rarely resolve to 50-50 outcomes unless there is documented evidence of injury, visa complications, or scheduling conflicts. The settlement window extends to 22 June, allowing a week beyond the scheduled date for completion, which covers standard tournament delays. Traders should monitor ATP and ATP Challenger Tour official draws for any withdrawal notices, particularly in the 48 hours before the match. Recent grass-court preparation tournaments in early June will provide form indicators; players competing in warm-up events immediately before Halle often carry momentum into the main draw.

The extreme probability skew warrants verification of market parameters. Confirmation of both players' entry into the Halle draw and their recent match records on grass surfaces will clarify whether the current odds reflect genuine information asymmetry or a data anomaly requiring correction.

Methodology

We track Halle Open: Terence Atmane vs Martin Landaluce on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

What does it cost to trade on Sport Prediction?

Zero. Sport Prediction routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Sport Prediction triggers a quick verification flow that finishes in minutes.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.