Abstract: An apparatus for developing strength and skill in striking a ball in sports such as golf, tennis, squash, racquetball, table tennis, baseball, cricket and the like where an increase of strength, hand-eye coordination, muscle memory and/or concentration is advantageous to the participant. The apparatus provides at least two strings which pass through, or on, a system of anchor members or brackets, such as pulleys, slides, orifices or arcuate shapes, and a means of providing a resisting force, such as a set of weights, or a spring loaded devices. The distal end from the handle of the club, racket or other ball striking device is attached to the strings and the ball striking device is held and swung by the user.