Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via March Madness Predictions) Pick polygram.ink (preferred broker) |
51% | 49% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | See live odds → |
Polymarket (direct) polymarket.com |
51% | 49% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | See live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | See live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | See live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | See live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 120-139 | 51% |
| 140-159 | 25% |
| 160-179 | 6% |
| 200+ | 4% |
| 180-199 | 3% |
| <20 | 0% |
| 20-39 | 0% |
| 40-59 | 0% |
| 60-79 | 0% |
| 80-99 | 0% |
| 100-119 | 0% |
Market context
Donald Trump’s Truth Social output has been highly volatile through late July, with several recent bursts showing how quickly the total can swing inside a single day. On 26 July he posted more than 25 AI-style images in roughly six hours, and reporting on 27 July described either 43 images in a similar span or, in another account, 67 posts in two hours and 113 in a day[3][5][7][13][16]. That kind of behaviour makes the current 0% implied probability look anchored to an expectation of very low activity, not to any structural limit on posting volume. By comparison, NPR’s tally found he averaged nearly 19 posts a day in the first four months of 2026, with explicit “announcements” making up a meaningful share of that activity[12].
For traders, the key variables are whether Trump has a fresh political, legal or media trigger, and whether he enters another image-heavy posting cycle that the tracker counts as main-feed posts or reposts. Recent coverage has shown that his feed can intensify around campaign messaging, conflicts, or criticisms, and Trump Media began selling early access to his posts to Wall Street firms on 1 August, which underscores the market sensitivity to timing even if it does not directly change the post count[9][18]. The most relevant near-term catalyst is simply his own schedule: any public appearance, policy announcement, or reactive commentary could produce a burst similar to the late-July spikes, while a quiet stretch would keep the count near zero.
Methodology
Sports-specific comparison page for Donald Trump # Truth Social posts July 28 - August 4, 2026?. Polymarket's live quote (Polygon order book) plus platform attributes for the three reference venues. Sports markets reward liquidity — Polymarket and Betfair are materially deeper than Kalshi or Manifold.
Resolution & payout
Sports markets typically settle on official final-whistle plus league confirmation. Polymarket uses UMA Optimistic Oracle with a source URL per contract — usually official league data feeds or ESPN/Soccerway. Two-hour dispute window, then smart-contract payout in USDC.
FAQ
- When do sports markets resolve?
- Typically within hours of the official final whistle. Polymarket uses UMA Optimistic Oracle with source URLs pointing at official league data feeds — e.g. the Premier League for EPL markets, UEFA for Champions League, FIFA for World Cup.
- Can I bet on individual matches?
- Yes, Polymarket lists every major Premier League / Champions League / World Cup match as its own market. Liquidity varies — top matches like El Clásico or a semi-final often have six-figure pools, lower-league games closer to three-figure.
- What are live sports odds on Polymarket?
- Some top-tier matches stay open during play — you can trade the half-time probability in the 70th minute. Polymarket mid-prices update second-by-second; any frontend mirroring the order book shows the same movement.
- How fast do sports winnings settle?
- Once the official league outcome is logged in the UMA Oracle (typically 1-2 hours after the final whistle), Polymarket's smart contract triggers USDC payout. To your wallet within minutes.
- Can I import form data and lineups?
- This page shows the live Polymarket quote as an implied probability. Form data and lineups must be researched separately via sports data providers (e.g. Soccerway, ESPN, FBref) — we surface the market probability, not the sport analysis.
Trade Donald Trump # Truth Social posts July 28 - August 4… on March Madness Predictions
Live order book, 0% fees, USDC settlement in seconds.
Open live market →