Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via PolyGram) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open the market → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open the market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open the market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open the market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open the market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| NRFI | 100% |
| Spread -1.5 | 100% |
| O/U 9.5 | 100% |
| 1st 5 Innings Spread -1.5 | 100% |
| 1st 5 Innings Spread -2.5 | 100% |
| 1st 5 Innings O/U 2.5 | 100% |
| 1st 5 Innings O/U 3.5 | 100% |
| 1st 5 Innings O/U 4.5 | 100% |
| 1st 5 Innings O/U 5.5 | 100% |
| 1st 5 Innings O/U 6.5 | 100% |
| O/U 8.5 | 100% |
| O/U 7.5 | 100% |
| Spread -3.5 | 100% |
| Spread -2.5 | 100% |
| Kansas City Royals vs. New York Mets | 0% |
| 1st 5 Innings Spread -1.5 | 0% |
| 1st 5 Innings Spread -2.5 | 0% |
| Extra Innings | 0% |
| Spread -1.5 | 0% |
| O/U 10.5 | 0% |
| O/U 11.5 | 0% |
| Spread -4.5 | 0% |
Market context
The Kansas City Royals and New York Mets face off today in a pivotal MLB game at 1:10PM ET, with the Royals currently holding a 41% chance of victory on Polymarket. This contract, settled in USDC on the Polygon network via conditional tokens, prices the Royals as the underdog despite their recent series momentum. The market reflects a sharp divergence from algorithmic forecasts, which favour the Mets with a 58% win probability, suggesting on-chain traders are betting against the statistical model based on live game dynamics.
Historical precedents in MLB series often show that a team losing the first game by a large margin, such as the Mets’ 6-2 defeat on July 8, can struggle to regain form quickly, yet the Royals’ 41% probability implies caution about their consistency. In comparable 2025 and 2024 series, teams that exploded for five runs in a single inning, like the Mets did in the eighth, frequently bounced back with strong offensive performances in the following game, making the current underdog pricing for the Royals a high-risk position. Traders should note that series ties often lead to volatile swings in conditional token values as the final game becomes a decider.
Key catalysts include Seth Lugo’s return to face his former Mets team, where his 3.48 ERA from 2016–22 could influence pitching matchups, and Juan Soto’s recent two-homer performance in the series, which signals potent offensive threat for the Mets. Traders must monitor the official starting lineups released by MLB before 1:00PM ET, as any late injury to a key pitcher or batter could drastically shift the USDC price. Recent previews from MLB.com highlight Lugo’s career history with the Mets as a critical narrative, while Bleacher Report’s odds suggest the Mets remain the favoured side despite the Royals’ narrow lead in the series.
Live Data & Statistics
Live stats load when the match begins. Current market odds are shown above. Trading volume: $805K.
Methodology
This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to PolyGram, which mirrors the Polymarket order book directly.
Resolution & payout
Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.
Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.
FAQ
- Where can I trade this market with the lowest fees?
- Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is PolyGram. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- How does resolution work?
- Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.
- What does Polymarket cost to trade?
- Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.
- How fast are USDC deposits?
- Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.
- How reliable are the quoted odds?
- The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.
Trade Kansas City Royals vs. New York Mets on PolyGram
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