MLB: Stolen Bases Leader

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Market context

The 2026 MLB regular season will conclude on 28 September, determining which player records the most stolen bases. Nasim Nuñez currently leads the league with 31 steals, followed closely by Bobby Witt Jr. with 28, yet the market assigns only an 8% chance to the “YES” outcome of any specific player winning, suggesting the odds favour a surprise contender or a tight tie-breaker scenario. Historical precedents show that stolen base leaders often emerge from mid-season surges; for instance, Elly De La Cruz and Chandler Simpson are projected to finish with 41 steals each, making them the betting favourites at +300 and +400 respectively, with FanGraphs’ ATC system confirming their dominance in projections [1][4].

Traders must monitor mid-season roster announcements, injury updates, and managerial strategies that prioritise speed, as these factors directly influence stolen base totals. Recent news from BetMGM highlights De La Cruz as the top favourite, while StatMuse confirms Nuñez’s current lead, but the volatility of the market implies that a single high-impact game or a late-season breakout could shift the leader [1][2]. Key dependencies include whether teams like the Reds or Rays adjust their line-ups to maximise speed opportunities, and whether injuries to key players like Nuñez or Witt Jr. alter the race. The settlement window’s proximity to the season’s end means that any caught stealing or on-base percentage tie-breakers will become critical in the final weeks [1][3].

The market’s low implied probability reflects the uncertainty of a multi-player race where projections favour De La Cruz and Simpson, yet current stats show Nuñez ahead. Traders should watch for lineup changes, especially if managers like the Reds’ or Rays’ prioritise speed, and monitor injury reports that could disrupt the current leaders. The tie-breaker rules—caught stealings, then on-base percentage—add complexity, meaning a player with fewer failed attempts could win despite a lower total. This dynamic makes the market highly sensitive to late-season performance, where a single streak could overturn the standings [1][4][9].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews MLB: Stolen Bases Leader across five venues. We show live odds for Polymarket-based markets (sourced from the Polygon order book); for other venues we list platform attributes, since the comparable contracts are not exposed via a public API on every venue. Every CTA points at PolyGram — the application we operate, where you trade directly against the Polymarket order book at 0% fees.

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.

What does it cost to trade on PolyGram?

Zero. PolyGram 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.

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.