Thomson vs Rice

This market covered the Round of 16 tennis match between Matthew Thomson and Keegan Rice at the 2026 M25 ITF Laval event, originally scheduled for July 9, 2026. On Kalshi, the market was framed as a Yes/No on Thomson winning, while Polymarket priced the head-to-head directly between the two players. In both cases, resolution followed the on-court result, with cancellations or walkovers reverting to a 50-50 split. By the snapshot, the match had effectively been settled in the pricing. Keegan Rice sat at a consensus 99.0% to advance, with Kalshi quoting him at 99.0% and Polymarket at 99.9%. Matthew Thomson was priced as the clear underdog at 1.0% on Kalshi and 0.0% on Polymarket. Related side markets on totals (over/under game lines) all pointed the same direction, with "Under" outcomes trading near 99.6–99.9% and their "Over" counterparts near zero. Cross-platform spreads were essentially flat, with less than a point separating Kalshi and Polymarket on Rice. The combined volume of roughly $1.18 million, overwhelmingly concentrated on Kalshi, reflects a market that had already converged on Rice as the near-certain winner across both venues.