The following market refers to the Koyama vs Sinclair professional tennis match in the 2026 M15 Harmon Quarterfinal after a ball has been played. If the match does not occur (signaled by a ball being played) due to a player injury, walkover, forfeiture, or any other cancellation (all before the match starts), all markets will resolve to $0.50. If a player withdraws or forfeits after a match has started, that player will resolve to No. If this match is postponed or delayed, the market will remain open and close after the rescheduled match has finished (within two weeks).