Brad Gilbert is an admitted long-time sports nut and analytical strategist, and he brings his unique, analytical perspective to tennis. After having read his book (I'm on the second go-round), I'm finding myself much more observant of both my own game and that of my opponent. The book is more of a left brained Inner Guide to Tennis, and is well worth the reading time. Plus, Gilbert has a kind of sardonic, self-depreciating sense of humor which makes it fun to read.