Guo / Mladenovic vs Jiang / Xu

This market covers the 2026 Wimbledon WTA women's doubles semifinal between Hanyu Guo / Kristina Mladenovic and Xinyu Jiang / Yifan Xu, listed on both Polymarket and Kalshi. Each side of the market resolves to whichever pair advances to the final, with standard rules covering retirements and walkovers. The headline matchup markets show Jiang/Xu as clear favourites. On Polymarket, the primary moneyline has Jiang/Xu at 73.5% versus Guo/Mladenovic at 26.5%, implying a lopsided edge for the Chinese pair. Kalshi's parallel market is meaningfully tighter, pricing Jiang/Xu at 55.0% and Guo/Mladenovic at 46.0% — essentially a coin flip with a modest lean. A secondary Polymarket book sits between the two, at 49.0%/39.5%. That gap between Polymarket's 73.5% and Kalshi's 55.0% is unusually wide for the same match and likely reflects thin liquidity (roughly $17K in combined volume) rather than genuine disagreement about the tennis. Several ancillary over/under and prop lines remain parked at 50%, indicating no real price discovery there yet. Taking the consensus at face value, Jiang/Xu are favoured to reach the final, but the cross-platform picture is muddled: Polymarket implies a heavy favourite while Kalshi implies a near-toss-up, so the true market view sits somewhere in between.