Professional. Jun 2, 2012. #2. I wouldn't doubt it's a 4 3/8. It allows for easier access to spin and racket acceleration. Federer's a world class athlete that uses a 90 sq inch head size, I'm sure he's able to compensate for less stability. B.
One thing missing off the spec sheet is grip size. The RF97 is of course available in differing sizes, but Federer's uses a 4 3/8″ grip (L3 for Europe) size which is customised by Ron Yu at Priority 1.
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Nadal uses a 4 ¼ inch grip, while Federer uses a 4 3/8 inch grip. Both professional players use overgrip, which does increase the grip size by about a 1/16 inch, but by the end of a match, this width has gone back down due to wear. Both players claim that using a smaller grip increases the power of a wrist snap shot.
Roger Federer’s Tennis Racquet Specifications. Wilson Pro Staff Roger Federer Autograph 97. Head Size: 97 sq. in. / 625.81 sq. cm. Length: 27in / 68.58cm
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What Racquet Does Roger Federer Use? When Roger Federer first burst onto the tennis scene as a teenager in 1998, he was using the Pro Staff 85 6.0. As the name suggests, this racquet had an 85-inch head. Federer started using an 85-inch head because several of his idols used this size including Stefan Edberg and Pete Sampras.