New York Mets vs. Seattle Mariners

Platform comparison

Active sub-markets

Market context

The New York Mets travel to Seattle for a regular-season matchup on 1 June at 9:40 PM ET, with the Mariners hosting at T-Mobile Park. The current 46% implied probability for a Mets victory reflects modest confidence in the visiting side, suggesting market participants view this as a competitive fixture without a clear favourite.

Historical matchups between these franchises show the Mets have held a slight edge in recent seasons, though home-field advantage at T-Mobile Park carries measurable weight in Pacific League play. The Mariners' 2024 roster construction emphasises defensive stability and contact hitting, whilst the Mets' offensive depth has fluctuated considerably depending on injury status. Win-loss records at this stage of the season typically correlate strongly with playoff positioning, making mid-June contests consequential for both clubs' trajectory.

Traders should monitor starting pitcher assignments, which remain the primary catalyst for single-game probability shifts. Recent roster moves, including any last-minute roster adjustments or injury updates released by either club's front office, will influence market movement in the days preceding first pitch. Weather conditions at Seattle—particularly wind direction affecting fly-ball carry—have historically influenced run-scoring patterns at T-Mobile Park. The settlement window extends to 9 June, allowing for postponement resolution should weather or scheduling conflicts arise.

Methodology

This page tracks New York Mets vs. Seattle Mariners across four political prediction venues. Live odds come from the Polymarket order book (the deepest political prediction-market book). Kalshi is the CFTC-regulated US alternative, Betfair the established UK sports-exchange with politics markets, Manifold the open play-money variant. Trump Prediction routes every trade through to Polymarket — at 0% fees.

Resolution & payout

Political markets typically settle on official candidate or agency confirmation. Polymarket uses UMA Optimistic Oracle: a proposer posts the outcome with a bond, the two-hour window opens, then the smart contract pays USDC.

Kalshi settles USD via CFTC clearinghouse, with clearly defined resolution sources (e.g. AP race calls for elections). Betfair settles after the official outcome is registered with the league or agency. Manifold is play-money.

FAQ

Where can I trade this market with the lowest fees?

On Trump Prediction, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

Trump Prediction is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

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.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Trump Prediction triggers a quick verification flow that finishes in 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.