MLB: Doubles Leader

Platform comparison

Market context

The 2026 MLB regular season will determine which player accumulates the most doubles across all 162 games. Historical leaders in this category typically average between 40 and 50 doubles per season, with the record standing at 67 set by Earl Webb in 1931. Recent seasons have seen players like Mookie Betts and José Altuve consistently rank among league leaders with 40+ doubles annually. The 2% implied probability suggests traders view this market as heavily dependent on unpredictable factors: injuries to established power hitters, unexpected breakout performances from younger players, and the inherent variance in hit placement across a full season.

Catalysts for movement centre on spring training performance reports and early-season statistics. By late April, patterns in player health and offensive form typically emerge; a player entering the season injury-free with a history of gap hitting carries material advantage. Trade deadline activity in late July can shift the competitive landscape if contending teams acquire established doubles hitters. The settlement window closes 11 October 2026, allowing for the complete regular season through early October. Traders should monitor preseason injury reports from MLB.com and team announcements, as the absence of a single dominant favourite—common in doubles leader markets—reflects genuine uncertainty about which player will sustain the necessary at-bat volume and hitting approach across nine months.

Methodology

This page tracks MLB: Doubles Leader across four political prediction venues. Live odds come from the Polymarket order book (the deepest political prediction-market book). Kalshi is the CFTC-regulated US alternative, Betfair the established UK sports-exchange with politics markets, Manifold the open play-money variant. For users geo-blocked from Polymarket directly, brokers like Election Predictions UK provide a 0%-fee route into the same order book.

Resolution & payout

For political markets the resolution source is decisive. Polymarket defines a concrete source per contract (e.g. AP, Reuters, official electoral commission) and uses the UMA Optimistic Oracle as the on-chain dispute mechanism. With a clearly defined outcome the USDC payout lands within minutes of the final confirmation.

FAQ

What resolution source is used for elections?

Polymarket defines the source per contract — usually Associated Press (AP Race Call), Reuters or the official electoral commission. The source is stated in contract details before the market opens.

Can prediction markets influence election outcomes?

Markets reflect expectations rather than create them. Studies show public-facing markets can anchor expectations, but don't influence the underlying outcome. Political markets are information, not advocacy.

Which platform has the deepest political liquidity?

Polymarket — by far. US 2024 presidential volume was ~$3.5B vs Kalshi (~$200M) and Betfair (~$120M). Where Polymarket is geo-blocked, brokers like Election Predictions UK route into the same order book at 0% fees.

How fast do political markets react to news?

High-liquidity markets move within seconds to minutes. A Trump tweet on the economy can shift the "Trump 2024" market 2-5 points before mainstream media has written anything.

Are political prediction markets legal in my country?

It varies. They sit in legal gray areas in most jurisdictions. Polymarket is geo-blocked from US/UK/EU; some broker frontends have a different geo footprint. Trade only with capital you can afford to lose, and only if you understand the legal status in your jurisdiction.