I think the rules for extra innings or overtime can impact the types of bets that are available and how they are graded. For example, in baseball, the most common bet is the moneyline, which is a straight-up bet on which team will win the game., if the game goes into extra innings, the rules may change, and some sportsbooks will offer bets that only apply to the extra innings, such as who will score first in extra innings or the total number of runs scored in extra innings.