Pronóstico: Detroit Tigers vs. Seattle Mariners

Platform comparison

Market context

Polymarket has this Tigers–Mariners contract at **46% YES** right now, so the market is pricing Detroit as a slight underdog on the USDC-settled, Polygon-based conditional token contract rather than a clear favourite. That sits close to a coin-flip, which is typical when the game is near the start and traders are balancing probable line-up quality, bullpen usage and late injury or weather information against the current number.

Recent head-to-head results give Detroit some support, but not enough to pull the price decisively higher. The Tigers beat Seattle 8-0 on 4 August and followed that with a 5-4 win and a 7-3 win earlier in June, while ESPN’s game pages show the Mariners as the stronger all-round offensive team on the season in some snapshots, especially on pitching metrics and home record, even though Detroit has taken multiple meetings in this series.[1][3][4][6] For Polymarket users, that matters because the contract settles only on the official result, so short-term pricing tends to track matchup form more than season-long narrative.

The main catalysts are the confirmed starting pitchers, any late rest decisions, and whether the game is played on schedule at 4:10pm ET, because postponement keeps the market open until completion while a cancellation or tie would resolve 50-50 under the market rules. Team news can also move the price quickly if a key bat is scratched or a bullpen arm is unavailable; previews before the game have already highlighted Seattle’s stronger recent run and Detroit’s ability to score when it gets ahead early.[6][11]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Pronóstico: Detroit Tigers vs. Seattle Mariners across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

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

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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Polymarket Qué Es trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.

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.