MLB: Stolen Bases Leader

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Active sub-markets

Market context

The 2026 Major League Baseball regular season is currently underway, with the contest for the stolen base leader heading toward its conclusion by late September. This prediction market offers an 8% implied probability that the current favourite will prevail, a figure that diverges sharply from the consensus found across traditional sportsbooks. Major betting lines from BetMGM and DraftKings consistently price Cincinnati Reds shortstop Elly De La Cruz as the primary contender at +300, which translates to an implied probability of roughly 25%. This significant gap between the 25% sportsbook valuation and the 8% prediction-market price suggests a notable mispricing or a distinct divergence in how different platforms assess the likelihood of his success compared to the broader field.

Historical data and projection systems frame this probability with caution, as the stolen base category is notoriously volatile and prone to sudden shifts due to injury or managerial strategy. FanGraphs’ ATC projection system and FantasyPros both forecast De La Cruz and Tampa Bay Rays’ Chandler Simpson to lead the majors with 41 stolen bases, a figure that places them well ahead of the next tier of contenders like Corbin Carroll and Bobby Witt Jr. who are projected for roughly 34 to 35. The tie-breaking rules, which prioritise fewer caught stealings and then higher on-base percentage, add a layer of complexity that often sees the official leader differ from the player with the highest raw count, a nuance that projection models sometimes underweight when calculating win probabilities.

Traders should monitor daily lineup announcements and injury reports, as the speed of a player is the single most critical dependency for this outcome. Recent coverage from CBS Sports highlights that De La Cruz remains the top expert pick, yet the volatility of the season means that a single missed game due to a minor issue could alter the final standings significantly. The settlement window closing on 28 September 2026 leaves little room for late-season surges, making the current pace of stolen bases the primary catalyst to watch. Any announcement regarding a change in the Reds’ or Rays’ batting order or a shift in their aggressive base-running philosophy will serve as an immediate signal for market adjustment.

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Methodology

We track MLB: Stolen Bases Leader 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

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

Is this market available outside the US?

Best Prediction Markets 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.

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 Best Prediction Markets UK?

Zero. Best Prediction Markets 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.

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.