Roger Federer is a Swiss professional tennis player who as of December 2012 is ranked world No. 2 by the ATP. Many sports analysts, tennis critics and former and current players consider Federer the greatest tennis player of all time. Federer currently plays with a customised Wilson Pro Staff 6.1 90 BLX tennis racquet, which is characterised by its smaller hitting area of 90 square inches, heavy strung weight of 364 grams, and thin beam of 17.5 millimeters. His grip size is 4 3/8 inches (sometimes referred to as L3). Federer strings his racquets at 21.5 kg mains/20 kg crosses pre stretched 20%, utilizing Wilson Natural Gut 16 gauge for his main strings and Luxilon Big Banger ALU Power Rough 16L gauge (polyester) for his cross strings. 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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