Boogaard vs Onclin

The Boogaard vs Onclin market centred on a single first-round ATP Challenger Bunschoten tennis match between Thijs Boogaard and Gauthier Onclin, scheduled for mid-July 2026. On Kalshi, the market resolved Yes if Boogaard won after a ball had been played; on Polymarket, the market resolved to whichever player advanced, with specific rules for retirements and walkovers. Azuro also listed the head-to-head alongside a wide range of game-total, handicap, and set markets. By the snapshot, the match had effectively resolved in Boogaard's favour. The head-to-head prices Boogaard at 100.0% on Polymarket and 99.0% on Kalshi, with Onclin quoted at 0.1% on Polymarket and 1.0% on Kalshi. Kalshi carried the bulk of the action, with about $1.46M in volume against roughly $85K on Polymarket and no recorded volume on Azuro. Cross-platform agreement on the winner is tight, with only about a 0.95-point spread between Kalshi and Polymarket. Azuro's residual quotes on ancillary lines (handicaps, over/unders on games) show varied numbers but do not contradict the settled head-to-head. Overall, the platforms converge almost perfectly on Boogaard as the winner, leaving effectively no meaningful cross-platform disagreement on the main outcome.