Analytics
“Back vs. Tsai: Set 1 Games O/U 8.5” is a prediction market on Polymarket with two tradeable outcomes, Yes and No. It belongs to the event “ITF Taipei: Dayeon Back vs Yu Ning Tsai”. The Yes price is the crowd's implied probability that the question resolves Yes; every trade on the public order book moves it.
The venue reports this market as closed. Its scheduled close is Jun 23, 2026. No resolved outcome is inferred from a closed or suspended state.
Public Polymarket market/event context is available; Vultax source-pack coverage is tracked separately.
This resolved market has no live orderbook depth; the public close quote is shown for context.
Nine stops, one per figure on this page. Each stop says what the number is, why it matters, and what it reads right now for this market.
Each outcome trades as a share that pays $1 if it wins and nothing if it loses. Prices are quoted in cents, and Yes plus No add up to about one dollar.
The current provider holder request did not complete. No legacy holder rows are being substituted.
This market refers to the tennis match between Dayeon Back and Yu Ning Tsai in the ITF Women Taipei, originally scheduled for June 15, 2026 at 10:15PM ET. This market will resolve to 'Dayeon Back' if Dayeon Back advances against Yu Ning Tsai. This market will resolve to 'Yu Ning Tsai' if Yu Ning Tsai advances against Dayeon Back. If the match is canceled (not played at all), ends in a tie, or is delayed beyond 7 days from the scheduled date without a winner determined, this market will resolve to 50-50. If the match begins but is not completed, and one player advances due to the opponent's retirement, default, or disqualification, this market will resolve to the player who advances. If the match ends in a walkover (player withdraws before the start and the other advances automatically), this market will resolve to 50-50. The primary resolution source will be official information from the International Tennis Federation (ITF). A consensus of credible reporting may also be used.
Resolution source: https://www.itftennis.com/en/tournament-calendar/
Official listing: polymarket.com/event/itf-back-tsai-2026-06-16-first-set-total-8pt5
The Yes price read as a chance. A share at 21.5¢ means the crowd gives Yes about a 21.5% chance right now. It moves with every trade, so it is a live forecast, not a verdict.
Dollar value of shares that changed hands in the last 24 hours. High volume means the price is being tested by real money; low volume means a few trades can move it.
Dollars resting in the order book, waiting to be traded against. Deep liquidity lets a large order fill near the quoted price; thin liquidity means the price jumps when someone trades size.
The gap between the best bid and the best ask. A tight spread makes entry and exit cheap; a wide spread is a cost paid on every round trip.
The wallets holding the most shares on each side, and how much of the loaded sample the largest ten control. Concentration shows whether a market is a crowd or a handful of large positions.
The public fills, newest first: which wallet bought or sold which outcome, at what price, and when. It is the market's own diary, and every wallet on it links to a trader profile.
Hourly closes of the Yes price. The range shows how sure or split the crowd has been; the move shows which way it has been changing its mind.
Trading stops at the close time. The outcome is then settled by the resolution source named in the rules. A closed market is not resolved until the venue reports it, so the two states are shown separately.
Market-scoped trader rows are not available for this market.