Granby: Yuta Shimizu vs Jay Dylan Friend

Platform comparison

Market context

Yuta Shimizu and Jay Dylan Friend are scheduled to compete in a tennis match at Granby on 13 July 2026. The market currently reflects near-certainty that the match will proceed and produce a decisive winner, with settlement occurring by 20 July. The 100% implied probability on "YES" suggests traders expect the fixture to be completed within the scheduled window, though the resolution criteria account for cancellation, ties, or delays exceeding seven days, each of which would trigger a 50-50 split.

Historical precedent for professional tennis scheduling shows that ATP and ITF-sanctioned events maintain high completion rates, particularly at established venues like Granby. Matches are rarely cancelled outright; postponements typically occur within the seven-day grace period specified in this market's terms. The current probability reflects standard assumptions about player availability and venue readiness rather than any documented injury, withdrawal notice, or scheduling conflict affecting either competitor.

Traders should monitor official ATP or ITF announcements regarding player withdrawals, which typically emerge 48 to 72 hours before scheduled play. Weather forecasts for the Granby region in mid-July may also influence completion risk, though outdoor clay courts generally accommodate play across a wider range of conditions than grass surfaces. Any announcement of either player's injury or tournament withdrawal would materially shift the market; the settlement window's extension to 20 July provides a buffer for rescheduling should the original date prove unworkable.

Methodology

Political prediction markets differ structurally from sports betting: thinner liquidity, longer settlement windows, higher sensitivity to single news events. This page shows the live Polymarket quote for Granby: Yuta Shimizu vs Jay Dylan Friend plus platform attributes for the three reference venues, so you can see at a glance where the deepest market for this question sits.

Resolution & payout

For political markets the resolution source is decisive. Polymarket defines a concrete source per contract (e.g. AP, Reuters, official electoral commission) and uses the UMA Optimistic Oracle as the on-chain dispute mechanism. With a clearly defined outcome the USDC payout lands within minutes of the final confirmation.

FAQ

How accurate are political prediction markets?

Historically more accurate than polls. Polymarket's Brier score on US 2024 elections was ~0.11 — better than 538 (~0.14) and every mainstream poll. Markets aggregate information with real skin in the game.

What resolution source is used for elections?

Polymarket defines the source per contract — usually Associated Press (AP Race Call), Reuters or the official electoral commission. The source is stated in contract details before the market opens.

How fast do political markets react to news?

High-liquidity markets move within seconds to minutes. A Trump tweet on the economy can shift the "Trump 2024" market 2-5 points before mainstream media has written anything.

Why do Polymarket and Kalshi differ on elections?

Kalshi must follow CFTC compliance — strict definitions, clear resolution sources, US citizens only with KYC. Polymarket operates globally without CFTC oversight — deeper liquidity, but also higher regulatory risk.

Which political events have the biggest volume?

US Presidential election, party nominations (DNC/RNC), Senate majorities, individual state outcomes (Pennsylvania, Michigan, Wisconsin), and major European elections. Peak markets reach $50-500M per event.