Abstract: A sports racket is provided that has a racket body with a racket head. The racket head has a frame that has substantially rectangular face shape with appropriately rounded corners. The frame has a string mounting positions in a predetermined arrangement on the four sides of the rectangular face shape. There are lockable grommets integrally disposed in the frame with each grommet at a different string mounting position. A string mounted to the racket head at the string mounting position forms individual strings of the main string portion and the cross string portion of the racket head. The lockable grommets can adjust tension of each individual string to control tension and thus vibration in the entire racket head.