Roger Federer
Equipment

Federer then began the 2014 season by changing rackets for the first time in his career. He switched from his longtime frame of 90 square inches to one measured at 97 square inches. He had long been at a comparative disadvantage in equipment as almost the entire tour, including his top rivals Nadal and Djokovic, used more powerful frames of between 95 and 100 square inches. Since then, Federer played with his signature Wilson Pro Staff RF97 Autograph racquet. It has a 97 square inch head, 16x19 string pattern, 366 gram strung weight, 340 gram swing weight, 68 RA stiffness, and 9 point head light balance. Federer strings his racquets using Wilson Natural Gut 16 gauge for his main strings and Luxilon ALU Power Rough 17 gauge (polyester) for his cross strings. In an interview in November 2017, Federer stated his favorite stringing tension is 26.5 kilograms (58.4 lb) mains & 25 kilograms (55.1 lb) crosses.

As a junior player, Federer played with a Wilson Pro Staff 6.0 85 square inch head racquet. He switched to a bigger custom-built Wilson 90 square inch head racquet in 2003. His grip size was 4 + 3 ⁄ 8 inches (L3). When asked about string tensions, Federer stated "this depends on how warm the days are and with what kind of balls I play and against who I play. So you can see – it depends on several factors and not just the surface; the feeling I have is most important."
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