MLB: AL Rookie of the Year

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Active sub-markets

Market context

The 2026 Major League Baseball American League Rookie of the Year award will be determined by voting among Baseball Writers' Association members following the regular season. The award recognises the most outstanding first-year player in the AL, with voting typically concluded by late November. This market settles upon official MLB announcement, with a tiebreaker resolved alphabetically by surname should multiple winners be declared under exceptional circumstances.

Historical voting patterns show that position players and pitchers with combined offensive or pitching excellence, plus substantial playing time, dominate the award. Since 2015, winners have typically accumulated between 3 and 5 million votes, with consensus candidates often emerging by mid-September. The current 4% implied probability reflects the market's assessment that no single prospect has yet established overwhelming favourite status—a common state for markets opened well before prospect debuts and early-season performance data materialise. Comparable markets from prior years have seen probabilities shift dramatically once spring training rosters are finalised and regular-season performance begins accumulating.

Traders should monitor prospect rankings from MLB Pipeline and Baseball America throughout 2025 and into spring training 2026, as injury reports and roster decisions will reshape candidate pools. The AL's competitive depth—particularly in organisations with strong farm systems—means multiple viable contenders typically emerge. Settlement hinges on official BBWAA voting conducted after the 2026 regular season concludes, with no interim adjustments possible. The December 2026 deadline provides a fixed resolution window; any season cancellation or delay past 31 December 2026 triggers "Other" resolution.

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). The odds column is filled only where we have clean data — that avoids the made-up numbers that get a network demoted when search engines cross-check against the source venue.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

FAQ

Where can I trade this market with the lowest fees?

On PolyGram, 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?

PolyGram 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 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?

Not under $1,500 of lifetime trading volume. Above that threshold, PolyGram 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.