It's a couple years old, but offers a lot of (potentially controversial) tidbits... http://www.racquetsportsindustry.com/articles/2006/09/stringing_for_the_modern_game.html Here's an excerpt (emphasis mine): "The Pros' Racquets The racquets used by the pros at Wimbledon were nearly the same as what can be purchased in tennis shops. A few players used frames painted to look like later models from their contracted brand, and one woman pro who recently signed with one racquet manufacturer still used her old racquet painted black with the new company's logo on the strings. A few players had custom-shaped grips. One very tall player used a size 9 (5 1/8 ) grip size. Another pro who uses an extreme Western grip had the two widest sides of his grip made smaller, allowing him to hold his racquet easier using a "frying pan" grip. Of the players having their racquets strung by the Bow Brand stringing service, about 85 percent of the frames were either midsize or midplus, while 15 percent were oversize."