Wolf vs Johnson

This market covered the ATP Challenger Lincoln (NE) Round of 16 tennis match between J.J. Wolf and Spencer Johnson, originally scheduled for July 15, 2026. On Kalshi, the market resolved based on whether Jeffrey John Wolf won after a ball was played; on Polymarket, the market picked the advancing player, with 50-50 resolution reserved for walkovers or cancellations. The event is now closed, with total volume of roughly $2.30 million, almost entirely on Kalshi. Spencer Johnson emerged as the decisive favourite, with a consensus implied probability of 99.0% — Kalshi settled at 99.0% for Johnson and just 1.0% for Wolf, consistent with a resolved outcome. Polymarket's headline moneyline showed Johnson around 69.0% and Wolf around 31.0%, alongside a wider grid of game-total and set markets clustered near 50%, reflecting a much thinner book at only about $1,099 in volume. The most striking cross-platform gap sat on Johnson's price: 38.1% at the low end on Polymarket versus 99.0% on Kalshi, a spread of roughly 61 points that almost certainly reflects stale or illiquid Polymarket quotes rather than genuine disagreement. Overall, Kalshi's deep, resolved market and Polymarket's shallow book point to the same winner, with pricing discrepancies driven by liquidity rather than differing views.