Wilson Shift 99L V1 Tennis Racket. Ideal for intermediate to advanced, all-around players who prefer a slightly lighter frame, the Shift 99L has an innovative string pattern and bending profile built to be stable, yet laterally flexible for controllable power and devastating spin. A first of its kind, the Shift V1 collection was built and refined via player feedback from all over the world. Add in the plant-based materials used throughout the end cap and bumper, this racket will bring your game to the next level.