A "dead hit" in tennis betting refers to a situation where a wager placed on a specific outcome becomes void, typically due to unforeseen circumstances that influence the match. This can occur if a match is canceled, postponed, or if a player withdraws from the tournament after the bet has been placed. In such cases, the sportsbook usually refunds the stake to the bettor, as the bet cannot be resolved as originally intended. A dead hit effectively means that the bet never had the opportunity to win or lose, resulting in a neutral outcome for the bettor.