Astana: Erik Arutiunian vs Masamichi Imamura

Platform comparison

Market context

Erik Arutiunian and Masamichi Imamura are scheduled to compete in a first-round match at the Astana Open on 13 August 2026. The 0% implied probability across prediction markets suggests either minimal trading activity or strong consensus favouring one player, though the settlement window extends to 20 August, allowing a seven-day buffer for delays or rescheduling without triggering a 50-50 resolution.

Arutiunian, a Kazakh player, holds a modest ATP ranking and has competed primarily on the Challenger circuit, where consistency rather than breakthrough performances defines his record. Imamura, the Japanese player, similarly operates in the lower-ranking tiers of professional tennis. Historical matchups between players of comparable ranking typically show sportsbooks assigning near-even odds or slight favourites based on recent form and surface preference. The current zero probability on prediction markets diverges sharply from typical sportsbook behaviour, suggesting either incomplete market participation or a data anomaly rather than genuine consensus.

Traders should monitor official ATP and tournament communications regarding court assignments, weather delays, or player withdrawals—particularly given the 1:00 AM ET start time, which may indicate a secondary court or scheduling adjustment. Recent tournament schedules from the Astana Open typically confirm matches 48 hours in advance. Any announcement of injury, illness, or withdrawal would trigger immediate resolution considerations. Surface conditions on hard courts in Kazakhstan during August, combined with player fitness reports closer to the event, represent the primary catalysts affecting match outcome probability before settlement closes.

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Best Prediction Markets, which mirrors the Polymarket order book directly.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

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 Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Best Prediction Markets trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.

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.