This event group covers a women's college basketball game between Rider Broncs and Mount St. Mary's Mountaineers scheduled for February 28, 2026 at 1:00 PM ET. Markets on both Polymarket and Kalshi are betting on the outcome of this single game, with resolution based on the final score including overtime.
Kalshi's market contains a logical contradiction where both possible game outcomes (Mount St. Mary's win OR Rider win) are stated to resolve to Yes, making the market unresolvable and creating a data integrity failure.
Hero Tip:
This is a critical flaw. Do not trade on Kalshi's version. Polymarket's market is the only resolvable option, with clear binary logic and proper edge case handling for postponements and cancellations.
Critical Divergence Points:
Polymarket:
Binary outcome market with mutually exclusive resolution: Rider Broncs win resolves to Rider Broncs, Mount St. Mary's win resolves to Mount St. Mary's Mountaineers. Includes postponement handling (market stays open) and cancellation handling (50-50 split). Key quote: If the Rider Broncs win, the market will resolve to Rider Broncs. If the Mount St. Mary's Mountaineers win, the market will resolve to Mount St. Mary's Mountaineers.
Kalshi:
Defective logic structure: both possible outcomes map to the same resolution. Key quote: If Mount St. Mary's wins then resolves to Yes. If Rider wins then resolves to Yes. This creates logical impossibility.
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