That would be neat, though, wouldn't it? Every run above what you needed to win could be banked, and you could add them onto a future game and win even if you don't score? To keep teams from just adding back and forth at the end until one team runs out of runs, you could only add them to your score before the game, so when you're playing another team's ace pitcher or you're starting your number 5 guy, you could start off ahead 6-0 or something.