New York Mets vs. Philadelphia Phillies

Platform comparison

Market context

The Mets travel to Philadelphia for a regular-season matchup against the Phillies on 19 July at 1:35PM ET, with settlement contingent on official MLB records by 26 July. The 100% implied probability reflects either exceptional certainty about game completion or sparse liquidity in the order book; neither outcome is predetermined, and the settlement window provides a week buffer for weather delays or scheduling adjustments common in mid-summer baseball.

Historical precedent suggests that same-division matchups between these franchises rarely cancel outright. Since 2015, postponements have occurred roughly once per season across MLB (weather, field conditions), but makeup games are scheduled within days, keeping markets open rather than triggering 50-50 splits. The Phillies hold a slight edge in head-to-head records over the past three seasons, though July performance varies significantly by roster health and recent form. Traders monitoring this market programmatically should flag any roster updates—injuries to starting pitchers or key position players shift implied win probabilities materially, sometimes 5–8 percentage points within hours of announcement.

Watch for official lineup announcements 24 hours pre-game and any weather alerts from the National Weather Service for Philadelphia. Conditional order logic should account for postponement scenarios: if the game shifts to 20 July or later, market settlement extends accordingly, affecting carry-over positions. Recent injury reports and bullpen availability typically surface via MLB.com and team social media channels by mid-morning on game day. Automated feeds tracking these data points allow traders to rebalance positions before the opening pitch.

Methodology

This page reviews New York Mets vs. Philadelphia Phillies across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Polymarket Bot UK, which mirrors the Polymarket order book at 0% fees.

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.

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.

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.