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Will Arizona Diamondbacks win the 2026 National League Championship Series?

3.5%
Consensus Probability (Model A — Inverse-Variance Log-Odds)
2 platforms · 0pp spread · $246K

Across 2 prediction market platforms, "Will Arizona Diamondbacks win the 2026 National League Championship Series?" has a consensus probability of 3.5%. Gemini: 3.5%, Polymarket: 0.9%. Consensus via geometric mean of odds (Satopaa et al., 2014), validated by IARPA ACE tournament.

Platform Comparison — white line = consensus
Gemini
View →
4%
$11K
Polymarket
View →
1%
$236K
Probability Over Time
All 4 Consensus Models
Market Details
Gemini
Updated 3d ago
Volume
$11K
Liquidity
Bid / Ask
— / —
Spread
Opened
Apr 2026
Resolves
Nov 2026
Polymarket
Updated 20d ago
Volume
$236K
Liquidity
$5K
Bid / Ask
0.9% / 1.0%
Spread
0.1%
Opened
Apr 2026
Resolves
Nov 2026
This market will resolve according to the team that wins the 2026 National League Championship Series. If at any point it becomes impossible for a listed team to win the 2026 National League Championship Series per the rules of the MLB (e.g., they are eliminated in the playoffs)…

About This Consensus

Computed from 2 platforms using geometric mean of odds (Satopaa et al., 2014). This method was validated by the IARPA ACE forecasting tournament as the most accurate probability aggregation technique. Full methodology →

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