Sorry Mad....it's clearly in their rules. Still a massive pisser.
1. When wagering on total runs (over/under) the game must go 9 innings (8.5 if the home team is ahead) to have action. If a game is called or suspended in extra innings, the score will be determined after the last full inning unless the home team scores to tie, or takes the lead in the bottom half of the inning, in which case the score is determined at the time the game is called.
2. Wagers on total runs will be refunded if a pitcher change occurs prior to both listed pitchers throwing at least one pitch.
3. Rules for run line wagers are the same as those for baseball totals.