MLB: Team to win 100+ games

Platform comparison

Active sub-markets

Market context

Winning 100 games in a 162-game MLB season remains a rare achievement. Since 2000, only 17 teams have crossed that threshold, with the most recent being the 2022 Houston Astros (106 wins) and 2023 Texas Rangers (105 wins). The 3% implied probability on Polymarket reflects the structural difficulty: a team must sustain a .617 winning percentage over the full season, equivalent to roughly 100 wins, whilst managing injuries, trades, and fixture variance. On Kalshi, where decimal odds are displayed alongside implied probability, the same market would show approximately 33.33 decimal odds (1÷0.03), making the visual comparison starker for traders accustomed to traditional sportsbook formats. Betfair's lay-betting mechanism allows traders to back the "No" outcome directly, which historically attracts liquidity when consensus probabilities are this low.

The 2026 season hinges on roster construction, front-office spending decisions, and injury resilience during the off-season and spring training. Teams with established cores—such as the Dodgers, Yankees, or Astros—enter with structural advantages, though no franchise has won 100+ games in consecutive seasons since the 2009–2010 Yankees. Trades and free-agent signings will be finalised by late March 2026, with spring training providing early performance signals. Smarkets' lower fee structure (2% versus Polymarket's 2% and Kalshi's variable commission) may attract longer-term position holders betting on specific contenders. Settlement occurs on 28 September 2026, after the regular season concludes, with tiebreaker games (Game 163) counted toward the total.

Methodology

This page compares MLB: Team to win 100+ games specifically across Polymarket, Kalshi, Betfair Exchange and Smarkets. Live odds come from the Polymarket order book; the other venues' contract details are maintained manually because their APIs aren't directly comparable. Every CTA routes to PolyGram, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Polymarket settles via UMA Optimistic Oracle on Polygon. A proposer posts the outcome with a bond, the two-hour window runs, then the smart contract pays USDC.

Kalshi settles USD through the CFTC-regulated clearinghouse — the cleanest variant, with heavier KYC. Betfair Exchange settles in account currency (GBP/EUR), net of 2-5% commission. Smarkets follows the same model as Betfair with a lower default 2% commission.

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.

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 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.

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.