Yang vs Sibai

This market covers a first-round ITF W15 Brisbane women's singles match between Ya Yi Yang and Jizelle Sibai, originally scheduled for 21 July 2026. The main moneyline resolves to the player who advances, with standard tie-break rules for cancellations, walkovers, and retirements varying slightly between Polymarket and Kalshi. Alongside the head-to-head, the event carries a deep book of totals, handicaps, and game-count derivatives, mostly listed on Azuro. Pricing on the outright is essentially settled in Yang's favour. Polymarket has Ya Yi Yang at 99.9% and Kalshi at 99.0%, implying Sibai is priced at 1.0% or lower on both venues. Kalshi, which carries virtually all of the $2.25M volume on this event, is the more liquid reference point. Azuro is the clear outlier: it prices Yang at just 69.9% and Sibai at 38.5%, a gap of nearly 30 percentage points versus the binary books, though Azuro shows no reported volume or liquidity here. On the derivatives, Polymarket's total games market leans slightly Under 2.5 at 54.0% versus Azuro's 69.4%, and an alternative Over sits around 56.8–57.0% on both platforms. The takeaway: Kalshi and Polymarket agree Yang is an overwhelming favourite, while Azuro's markets diverge sharply but on negligible liquidity.