Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via March Madness Predictions) Pick polygram.ink (preferred broker) |
89% | 11% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | See live odds → |
Polymarket (direct) polymarket.com |
89% | 11% | 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 |
|---|---|
| 1st 5 Innings O/U 2.5 | 89% |
| 1st 5 Innings O/U 3.5 | 80% |
| 1st 5 Innings O/U 4.5 | 69% |
| Tampa Bay Rays vs. Colorado Rockies | 61% |
| NRFI | 61% |
| 1st 5 Innings O/U 5.5 | 58% |
| O/U 10.5 | 56% |
| Spread -1.5 | 50% |
| O/U 11.5 | 48% |
| 1st 5 Innings O/U 6.5 | 47% |
| O/U 12.5 | 42% |
| Spread -2.5 | 41% |
| 1st 5 Innings Spread -1.5 | 39% |
| 1st 5 Innings Spread -1.5 | 28% |
| Spread -1.5 | 27% |
| Spread -2.5 | 19% |
| Extra Innings | 7% |
Market context
The Tampa Bay Rays meet the Colorado Rockies in Denver with the market leaning towards Tampa Bay, and the 61% yes price is in line with the gap between the clubs’ seasons and recent form. The Rays came in as a first-place side in the AL East and had won the first two games of this series, 13-9 on 3 August and 9-7 on 4 August, while the Rockies remained well below .500 and near the foot of the NL West.[1][6][9]
The historical read on a price in this range is that it reflects a mismatch, but not a certainty: Tampa Bay’s pitching profile has been much stronger, with ESPN listing the Rays’ last-10 ERA at 2.43 versus Colorado’s 5.33, while Colorado’s overall staff ERA was still 30th in the league on the preview card.[9][15] The Rockies have also been carrying a heavy injury load, with multiple pitchers on the injured list and Kris Bryant among the notable absences, which has limited their margin for error.[9]
For traders, the main catalysts are the line-up cards and any late pitching announcement, because the market will be sensitive to whether Tampa Bay gives regulars a full start or rests players after the series win. The Rockies’ recent scoring has been better than their season record suggests, but they have still needed volatile offence to keep pace, so any change in the Rays’ bullpen availability or a last-minute scratch would matter more than broad season averages.[9][3]
Live Data & Statistics
Live stats load when the match begins. Current market odds are shown above. Trading volume: $79K.
Methodology
Sports-specific comparison page for Tampa Bay Rays vs. Colorado Rockies. 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
- Are prediction markets better than sports betting?
- Prediction markets tend toward tighter odds than bookmakers because they use peer-to-peer exchange rather than bookmaker margin. On major matches, Polymarket quotes typically sit 2-5% closer to the true probability model than bet365 or DraftKings.
- 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.
- Which sports markets are available?
- Football (soccer) dominates — Champions League, World Cup, Premier League, La Liga, Bundesliga — followed by NFL, NBA, tennis Grand Slams, Formula 1, boxing/MMA. Resolution via official league source confirmation.
- What's the difference between match odds and outright odds?
- Match odds cover a single game ("Bayern beats BVB"). Outright odds are long-term aggregates ("Bayern wins the league"). Outright markets have deeper liquidity; match markets have faster resolution.
- 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 Tampa Bay Rays vs. Colorado Rockies on March Madness Predictions
Live order book, 0% fees, USDC settlement in seconds.
Open live market →