Designed specially by Roger Federer and Wilson, the Pro Staff RF 97 Autograph racquet is unlike any that has come before. This attractive frame demonstrates a fierce dominance with its design alone. More than looks though, this frame embodies a fiery passion for the game like that of Federer himself. With an enhanced head size and sweet spot, serious players will feel the immense power right at their fingertips. The new frame design features a crisp black and white colorway that stands out on the court. Sony Smart Tennis Sensor -compatible with the SO1 adapter ring. Frame used by Roger Federer. Amplifeel™ features customized foam and a softer butt cap for clean, enhanced feel. Features Attacker™ to influence every point on the court. Sleek matte black finish features a pop of white and laser engraving for a premium look and feel.