TOTAL VOLUME:
$134.2b
24H VOL:
$134,145,987
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,441,166,947
406,422
Markets across
30,383
events
MATCHED EVENTS:
2,688
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Aug 30, 6:10 PM EST
Kalshi
This market tracks the outcome of the first set in a professional tennis match between two players at a major tournament. It reflects who will claim the initial advantage in their head-to-head contest. The result depends purely on the players' performance during the first set of play.
If Tomas Martin Etcheverry wins set 1 in the Tomas Martin Etcheverry vs Vit Kopriva professional tennis match in the 2026 US Open Men Singles Round Of 128, then the market resolves to Yes. If Vit Kopriva wins set 1 in the Tomas Martin Etcheverry vs Vit Kopriva professional tennis match in the 2026 US Open Men Singles Round Of 128, then the market resolves to Yes.
On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. On Kalshi, traders collectively set the price through buying and selling contracts that represent each possible outcome. The current implied probability reflects the balance of buy and sell orders, with market depth and recent trading activity influencing shifts. As new data appears — such as player form or weather conditions — participants adjust their positions, causing prices to move.
This market resolves around Aug 30, 2026, with the outcome confirmed once the match result is verifiable from credible public reporting. The winner of the first set determines the final settlement, based on official match records and widely accepted sports data sources.
Key signals include practice session reports, player injury updates, or changes to court conditions that might affect performance. Any shift in tournament momentum — like early match results or crowd dynamics — can also sway trader sentiment. As Aug 30, 2026 approaches, updated forecasts from coaches or media analysts may cause noticeable price adjustments based on revised expectations for the opening set.