Second Line Defense:Utilizing the Libero by Peggy Martin VHS Format - 51 minutes ****VIDEOS ARE NOT RETURNABLE UNLESS DEFECTIVE. ALL SALES FINAL**** Second Line Defense: Utilizing the Libero presents a detailed overview of how coaches can effectively utilize the libero. In an easy-to-understand and apply manner, the video explains and shows how coaches can take advantage of the rule that permits unlimited substitution of the player designated as the libero (a back-row position player). Among the topics covered: individual defense, team defense by position, movement involved in team defense, comparing team defenses, and utilizing the libero.