The present invention provides a tennis training systems. Methods of practicing and teaching tennis are also provided herein. In one aspect, the training system employs an elongated, elastic cord having a proximal end and a distal end, a vibration dampener configured to be received within a string bed of a racket and operatively connected to the proximal end of the cord, and a connection disc operatively connected to the distal end of the cord. The vibration dampener is connected to the proximal end of the cord by means of an integral loop. Optionally, the connection disc is releasably connected to the distal end of the cord by means of an integral loop.