Who will win Bublik vs Diaz Acosta?

Kalshi

Resolution requires that a ball be played in the match, establishing that competition has commenced. The market resolves to the winner of the completed match. If the match does not occur before play begins due to injury, walkover, forfeiture, or other cancellation, the market resolves to a fair price. Postponements or delays do not close the market; it remains open until the rescheduled match concludes, provided this occurs within two weeks of the original date.