def game_number_for_day(self):
        """
        Returns an ``int`` denoting which game is played for the team during
        the given day. Default value is 1 where a team plays only one game
        during the day, but can be higher for double headers, etc. For example,
        if a team has a double header one day, the first game of the day will
        return 1 while the second game will return 2.
        """
        game_number = re.findall(r'\(\d+\)', self._date)
        if len(game_number) == 0:
            return 1
        game_number = re.findall(r'\d+', game_number[0])
        return int(game_number[0])
Returns an ``int`` denoting which game is played for the team during
        the given day. Default value is 1 where a team plays only one game
        during the day, but can be higher for double headers, etc. For example,
        if a team has a double header one day, the first game of the day will
        return 1 while the second game will return 2.