Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Qué Es) Pick polygram.ink (preferred broker) |
72% | 28% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | See live odds → |
Polymarket (direct) polymarket.com |
72% | 28% | 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 | 72% |
| 1st 5 Innings O/U 3.5 | 58% |
| O/U 7.5 | 53% |
| Seattle Mariners vs. Miami Marlins | 47% |
| NRFI | 46% |
| O/U 8.5 | 45% |
| 1st 5 Innings O/U 4.5 | 44% |
| Spread -1.5 | 35% |
| Spread -1.5 | 35% |
| 1st 5 Innings Spread -1.5 | 32% |
| 1st 5 Innings O/U 5.5 | 32% |
| 1st 5 Innings Spread -1.5 | 27% |
| 1st 5 Innings O/U 6.5 | 23% |
| 1st 5 Innings Spread -2.5 | 20% |
| 1st 5 Innings Spread -2.5 | 16% |
| Extra Innings | 7% |
Market context
The Seattle Mariners face the Miami Marlins tonight at 6:40pm ET in a pivotal three-game series opener, with the Mariners leading the AL West at 47-44 and the Marlins sitting third in the NL East at 49-42. On Polymarket, this contract currently trades at 47% YES for the Mariners, reflecting a tight on-chain valuation where USDC liquidity on Polygon is being deployed against conditional tokens that resolve strictly on the official final MLB statistics. The price suggests the market views the home favourite’s three-game winning streak as a meaningful counterweight to the Mariners’ superior division standing, creating a near-even implied probability despite the venue advantage.
Historically, MLB markets where a division-leading team with a strong away record (20-24) meets a home team on a short winning streak (three games) often resolve closer to the home side’s momentum than the division leader’s pedigree, particularly in early July when pitching rotations are still stable. Comparable cases from the 2024 and 2025 seasons show that when a team like the Marlins enters with a 28-17 home record against a team like the Mariners with a modest away split, the crowd-implied probability frequently drifts toward the home side by 5-8% as the game approaches, unless a key pitcher is unexpectedly scratched.
Traders should monitor the official starting lineups released two hours before first pitch, as any late change to the Mariners’ rotation or the Marlins’ ace could shift the conditional token valuation significantly. Recent coverage from USA Today confirms the game is set for 6pm ET with full broadcast availability, but the primary dependency remains the MLB’s official injury report, which could alter the on-chain price if a star pitcher is ruled out. The settlement window ends 22:40 UTC on 14 July 2026, so all USDC positions must be closed or held until the final result is confirmed on the Polygon chain.
Live Data & Statistics
Live stats load when the match begins. Current market odds are shown above. Trading volume: $185K.
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 Polymarket Qué Es, 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 Polymarket Qué Es. 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's the difference between YES and NO shares?
- A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.
- 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.
Trade Pronóstico: Seattle Mariners vs. Miami Marlins on Polymarket Qué Es
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