2026 Tennis Grand Slam Tracker—US Open

Shared workspace on Qwidgets for tracking prediction markets across Kalshi, Polymarket, Manifold, and PredictIt. Live prices, candlestick charts, order books, and historical analytics for every event and market on this page.

Markets in this workspace

The US Open (Aug 31–Sep 13, 2026, Flushing Meadows) is the next Grand Slam and the current anchor of this tennis tracker. Kalshi carries the deepest US singles books—US Open Men's Singles Winner and US Open Women's Singles Winner Categoricals—while Manifold lists the men's grand-slam-finalists Multiple as an independent cross-market read. Kalshi's season-long ATP and WTA grand-slam Multiples run underneath, tracking who wins any major in 2026.

Anchor: Kalshi—US Open Men's Singles Winner (settles Sep 14). Roland-Garros and Wimbledon are done; the US Open closes the 2026 slam calendar.

Copy this workspace to your own account to keep tracking through the final.

Kalshi's US Open men's singles Categorical is the anchor, paired with Manifold's 2026 men's grand-slam-finalists Multiple as an independent read. The pie shows every player in the field—no count cap—so long-tail seeds stay visible alongside the Alcaraz/Sinner front-runners.

Kalshi's US Open women's singles Categorical, paired with Kalshi's 2026 WTA grand-slam Multiple as the season-wide read on who wins any women's major this year.

Kalshi's KXATPGRANDSLAM-26 lists every player who could win an ATP slam in 2026—a season-wide Multiple that extends the US Open story to the full grand-slam calendar (Roland-Garros and Wimbledon done, US Open the final major).

  • US Open men's field. Kalshi's Categorical prices every player in the men's draw. Watch how the favorites' probabilities firm up as seedings and the bracket land ahead of the Aug 31 start.
  • Manifold grand-slam-finalists read. Manifold's men's grand-slam-finalists Multiple is a lighter, independent forecast—when it diverges from Kalshi's outright-winner book on a given name, the gap is worth a look.
  • Women's draw volatility. The women's book historically reprices more aggressively round-by-round than the men's—long-tail seeds carry more probability mass early, then collapse fast as upsets resolve.
  • Season multiples as backdrop. The Kalshi ATP and WTA grand-slam Multiples are the season-wide read. With Roland-Garros and Wimbledon settled, a US Open win is the last chance to move each player's full-season slam probability.