MLB: NL Comeback Player of the Year

Platform comparison

Active sub-markets

Market context

The National League's Comeback Player of the Year award recognises a player who has returned to form after injury, illness, or significant performance decline during the previous season. The 12% implied probability on Polymarket reflects substantial uncertainty about which player will satisfy the award's criteria by season's end in 2026. USDC settlement on Polygon means traders hold conditional tokens representing claims on the eventual winner, with resolution tied to MLB's official announcement.

Historical voting patterns show the award typically goes to position players rather than pitchers, with recent winners including players who missed 50+ games the prior year or experienced marked statistical regression. The 2025 award winner will provide crucial context for understanding which recovery narratives resonate with voters. Comebacks from Tommy John surgery, major injuries requiring rehabilitation, or extended absences due to illness have dominated selections over the past decade, whereas modest performance rebounds rarely qualify.

Traders should monitor spring training reports and opening-day rosters from February 2026 onwards, as early-season performance will establish which players have genuinely recovered versus those still managing injury. Trade deadline activity in late July 2026 often clarifies which returning players will accumulate sufficient plate appearances or innings pitched to be considered. Significant injuries to established players during the 2025 season will shape the candidate pool, as will any notable retirements or roster changes affecting potential contenders.

Methodology

This page is a comparison snapshot: one live quote (Polymarket), four reference venues with their key attributes, and a single execution path — every trade button routes to Kalshi UK, which mirrors the Polymarket order book directly.

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 Kalshi 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.

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.

What does it cost to trade on Kalshi UK?

Zero. Kalshi UK routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

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.