Batted ball Code for Retrosheet
        :param event_cd: Event code
        :param event_tx: Event text
        :param ab_des: at bat description
        :return: battedball_cd(str)

def battedball_cd(cls, event_cd, event_tx, ab_des):
        """
        Batted ball Code for Retrosheet
        :param event_cd: Event code
        :param event_tx: Event text
        :param ab_des: at bat description
        :return: battedball_cd(str)
        """
        _event_tx = event_tx.lower()
        # Fly Out
        if _event_tx in cls.EVENT_02_GENERIC_OUT_FLYBALL:
            return 'F'
        # Line Out
        elif _event_tx in cls.EVENT_02_GENERIC_OUT_LINEDRIVE:
            return 'L'
        # Pop Out
        elif _event_tx in cls.EVENT_02_GENERIC_OUT_POPUP:
            return 'P'
        # Grounder
        elif _event_tx in cls.EVENT_02_GENERIC_OUT_GROUNDBALL:
            return 'G'
        # Force out, double play, triple play
        elif _event_tx in cls.EVENT_02_GENERIC_OUT_OTHER:
            return cls._battedball_cd(ab_des)
        # Single, 2B, 3B, HR
        elif event_cd in cls.EVENT_CD_HITS:
            return cls._battedball_cd(ab_des)
        # Unknown
        else:
            return ''