Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via PolyGram) Pick polygram.ink (preferred broker) |
71% | 29% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open the market → |
Polymarket (direct) polymarket.com |
71% | 29% | 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 |
|---|---|
| 1st 5 Innings O/U 2.5 | 71% |
| 1st 5 Innings O/U 3.5 | 58% |
| Seattle Mariners vs. Texas Rangers | 56% |
| O/U 7.5 | 54% |
| 1st 5 Innings O/U 4.5 | 47% |
| O/U 8.5 | 45% |
| NRFI | 44% |
| Spread -1.5 | 42% |
| O/U 9.5 | 35% |
| 1st 5 Innings Spread -1.5 | 32% |
| 1st 5 Innings O/U 5.5 | 32% |
| Spread -2.5 | 31% |
| Spread -1.5 | 28% |
| 1st 5 Innings Spread -1.5 | 23% |
| 1st 5 Innings O/U 6.5 | 22% |
| Spread -2.5 | 19% |
| Extra Innings | 9% |
Market context
The Seattle Mariners face the Texas Rangers on 27 July at 2:35PM ET in what Polymarket currently prices at 56% implied probability for a Mariners victory. This reflects modest favouring of Seattle, though the spread remains competitive enough that either outcome commands meaningful conditional token value on Polygon. The settlement window extends to 3 August, allowing for postponement scenarios that would keep the market open until completion.
Seattle's recent form and roster composition provide context for reading this probability. The Mariners have maintained competitive positioning throughout the season, whilst Texas—the defending World Series champions—enters with championship-calibre depth and proven postseason experience. Historical matchups between these franchises show relatively balanced outcomes, though Texas's recent dominance in October play has shifted perception of their baseline strength. The 56% mark suggests traders view Seattle as slight favourites in this regular-season contest, possibly reflecting home-field advantage or specific pitching matchups rather than fundamental roster superiority.
Traders monitoring this market should track starting pitcher announcements, which typically arrive 24–48 hours before game time and materially shift conditional token pricing. Injury reports from either roster could alter the probability substantially; the Rangers' recent injury management has drawn scrutiny from beat reporters covering the AL West. Weather conditions at the scheduled venue may also trigger postponement scenarios, resetting market mechanics. The official MLB schedule and team injury reports remain the primary information sources for assessing whether the underlying game proceeds as scheduled on 27 July.
Live Data & Statistics
Live stats load when the match begins. Current market odds are shown above. Trading volume: $120K.
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
At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.
On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.
FAQ
- Is this market available outside the US?
- Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.
- 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.
- 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 Seattle Mariners vs. Texas Rangers on PolyGram
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