Pittsburgh Pirates vs. Colorado Rockies

Platform comparison

Active sub-markets

Market context

Polymarket prices the Pittsburgh Pirates at **6% YES** for this USDC-settled contract on Polygon, so the market is currently assigning only a small chance that Pittsburgh wins outright. That low bid is consistent with a heavily one-sided underlying game state: mainstream odds outlets had Pittsburgh priced as the away favourite before first pitch, with ESPN showing the Pirates around **+119** and FanDuel listing them at **-210** in related odds coverage, while the game was scheduled at Coors Field in Denver.[3][1][5]

For context, a 6% contract price implies the market is treating a Pirates win as a clear longshot rather than a coin flip. Comparable pregame baseball markets often swing sharply once line-ups, pitching confirmations and late injury news are known, especially in high-variance parks like Coors Field where run environments can distort pregame projections; here, coverage around the matchup pointed to Pittsburgh as the stronger side on the numbers, with numberFire cited by FanDuel giving the Pirates a **70.5%** win prediction.[1] After settlement, the conditional token resolves to Pittsburgh, Colorado, or 50-50 only if the game is cancelled or tied under the stated rules.

The practical catalysts for a Polymarket trader are the same ones that move the cash market: confirmed starters, late scratch news, and any postponement risk that could push the event beyond the settlement window ending **2026-06-28T01:10:00Z**. The market description also matters operationally: a postponed game stays open until completed, while a cancellation with no make-up, or a tie, resolves **50-50**, so the final MLB official result rather than any live score snapshot determines the token outcome. ESPN and Fox Sports both tracked the June 20 fixture as a standard regular-season game in Denver, which is the reference point for any reschedule or completion decision.[3][6]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Pittsburgh Pirates vs. Colorado Rockies on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.

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?

On Polymarket UK, 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?

Polymarket UK 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.

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 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.