US Open ATP: Martin Damm vs Frances Tiafoe
Martin Damm — market-implied probability
60.5%▲ +38.0 points in 24h
Frances Tiafoe 39.5%
$491Klifetime volume
$490K24h volume
$219Kliquidity
Martin Damm is trading at 60.5% on Polymarket, up 38.0 points in the last 24 hours. $491K traded over the market’s life, $490K of it in the last day. It resolves on 6 September 2026, 5 days from now.
By volume it is number 420 of the 678 open sports markets on the board, and $490K of that traded in the last day.
Current odds
| Martin Damm | 60.5% | |
|---|---|---|
| Frances Tiafoe | 39.5% |
Prices are the market’s implied probability: a contract at 62% costs 62 cents and pays $1 if it resolves true.
Price history
Yes moved from 23.5% to 62.5% over the 4 days charted — 39.0 points higher, ranging between 19.5% and 63.5% on the way.
| Window open | 23.5% |
|---|---|
| Latest sample | 62.5% |
| Change over window | +39.0 points |
| Window high | 63.5% |
| Window low | 19.5% |
| Samples | 95, about hourly |
Read off the samples the line is drawn from. A price moved; PredictionBubbles reports the move and does not determine what caused it. Points, not percent. A change from 20% to 25% is five points.
Sampled for Yes. The live board draws every outcome and lets you switch the window.
Market activity
$491KLifetime volume
traded over the market's life.
$490K24h volume
traded in the last day.
$219KLiquidity
resting on the order book.
Where the venue does not publish a figure, it is left out rather than shown as zero.
Market timeline
opened
resolves
5 days remaining — recalculated on every 15-minute rebuild.
What does 60.5% mean?
The market is currently pricing the Martin Damm outcome at about 60.5%: a contract that pays $1 if the market resolves that way costs roughly 60.5% of its payout to buy. That number is the market-implied probability, the aggregated judgment of traders with money at stake, not a forecast by PredictionBubbles.
When the price moves, the market has repriced the question. The 24-hour figure on this page is that move in probability points, not percent. Markets can be early, late or wrong; what keeps the number honest is that anyone who disagrees can trade against it.
Where this price comes from
- Source
- Polymarket
- Type
- on-chain, Polygon
- Updated
- every 15 minutes
- Prices read
Polymarket is an on-chain venue settling in USDC on Polygon. The number above is the last traded price on this contract, pulled from the venue’s public API and refreshed every 15 minutes. This site takes no position and sets no price of its own.
To weigh it against the same question elsewhere, open the live board: it puts the busiest open Polymarket and Kalshi market side by side, sized by volume and colored by probability.
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