Will Cleveland Guardians win the 2026 American League Championship Series?

Prediction markets currently give a 5% probability that Will Cleveland Guardians win the 2026 American League Championship Series?. This contract trades at 5¢ on Polymarket, closing November 1, 2026. The Guardians ALCS contract is pricing in an extremely low 4% win probability with a striking 4409% implied yield on the Yes side, yet the market shows zero 24-hour volume despite $12.6M in open interest, suggesting this extreme yield reflects illiquidity rather than genuine edge.

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5¢
Bid/Ask 4/5¢·Spread 1¢·Vol $29.3·OI $15,913.84·Closes Nov 1, 2026·193d remaining
0x854c1dce2ddee55f390fcf11a1a8c7605058501a4c315030ffcdf9881ac4e438
7-day price3 snapshots · 4 regime
5¢5¢ current
Apr 83¢Apr 21

Analysis

5d ago

The Guardians ALCS contract is pricing in an extremely low 4% win probability with a striking 4409% implied yield on the Yes side, yet the market shows zero 24-hour volume despite $12.6M in open interest, suggesting this extreme yield reflects illiquidity rather than genuine edge. The 2¢ spread and neutral regime score indicate the market may be mispriced due to thin trading, as the risk-adjusted yield of 2205% still vastly exceeds typical market returns. With 199 days to expiration and the Guardians as a competitive AL team, this contract warrants monitoring for potential value opportunities if volume increases.

Resolution rules

This market will resolve according to the team that wins the 2026 American League Championship Series. If at any point it becomes impossible for a listed team to win the 2026 American League Championship Series per the rules of the MLB (e.g., they are eliminated in the playoffs), the corresponding market will resolve to “No”. If the 2026 American League Championship Series is cancelled, postponed after November 31, 2026, 11:59 PM ET, or there is otherwise no winner declared within that timeframe, this market will resolve to “Other”. The primary resolution source will be official information from Major League Baseball (https://www.mlb.com/); however, a consensus of credible reporting may also be used.

Indicators

IY (Yes) 3590.5%
IY (No) 9.9%
Adj IY 1795%
CRI 19
Overround 0.0%
▶ Full indicator table (5)
IndicatorValue
IY (Yes)3590.5%
IY (No)9.9%
Adj IY1795%
CRI19
Overround0.0%

Regime

Label
neutral
Score
0.341
Spread
1¢
Computed
4/21/2026, 8:29:09 PM
Observability lowEvent type sports
Indicators computed 4/21/2026, 8:23:18 PM

Trade

View on polymarketsf trade 0x854c1dce2ddee55f390fcf11a1a8c7605058501a4c315030ffcdf9881ac4e438 yes 100

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