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National Bank Open: Bencic's Withdrawal Leads to 50-50 Resolution for Gauff Match Polymarket

The highly anticipated National Bank Open quarterfinal between Belinda Bencic and Coco Gauff concluded with a walkover due to Bencic's injury, triggering a 50-50 resolution for the Polymarket prediction market, despite Gauff advancing in the tournament.

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The prediction market on Polymarket concerning the National Bank Open tennis match between Belinda Bencic and Coco Gauff, originally slated for August 11, 2026, has seen an unexpected resolution. Despite Coco Gauff advancing in the tournament, the market will resolve to a 50-50 split for participants due to the specific conditions governing a walkover.

The market, which saw a significant trading volume of $453,584 and initial odds of 0.495 for Bencic and 0.505 for Gauff, reflected a perception of a tightly contested match between the two formidable players. However, the contest did not play out as anticipated on the court. On August 11, 2026, Belinda Bencic, the No. 12 seed from Switzerland, was forced to withdraw from her quarterfinal match against the American Coco Gauff due to a hip injury.

Bencic's withdrawal meant that Gauff, the No. 4 seed, advanced directly to the semifinals via a walkover. While Gauff's progression in the National Bank Open is clear, the Polymarket's resolution rules explicitly state: "If the match ends in a walkover (player withdraws before the start and the other advances automatically), this market will resolve to 50-50." This clause overrides the outcome of who technically advanced in the WTA tournament, leading to an equal split for market participants.

Bencic had reportedly been battling an ongoing injury since Wimbledon, expressing prior concerns about her readiness for the tournament. She had played through previous rounds, including a victory over Alexandra Eala on August 9, 2026, but the physical toll ultimately led to her withdrawal before facing Gauff. Her decision, confirmed by tournament organizers and the WTA Tour, sent Gauff into the final four without hitting a ball in that specific quarterfinal.

The pre-match odds, which suggested a near coin-flip scenario, did not account for such a resolution mechanism. The market's initial prices, indicating a slight edge for Gauff, were based on the expectation of a competitive on-court battle. The eventual 50-50 resolution underscores the critical importance for participants in prediction markets to thoroughly understand the specific resolution criteria for all possible scenarios, not just the direct win/loss outcomes. For PolymarketIntel.com readers, this event serves as a prime example of how detailed market rules can significantly alter the final payoff, even when a clear winner advances in the actual sporting event.

Sources:

Market data fetched at 2026-08-12 00:17 UTC | Polymarket ID: 3474280

This article is generated by AI for informational purposes only. It does not constitute financial advice. Always do your own research before making any investment decisions. Data sourced from Polymarket and public web sources.

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