Dave Rineberg comes across in this boook as not only a competent coach, but also as a proud fatherly type influence in Serena & Venus's lives. Obviously, Richard WIlliams was the dominant figure in their formative years, but this book really shows how Rineberg was kept in the shadows & made to feel unappreciated by Richard Williams. Underpaid & often rudely dismissed, Rineberg still retained a committment to the girls' tennis game, to their hitting sessions, and their tournament appearances. He put up with RW's outlandish behavior for the benefit of the Serena & Venus, who you could see he developed alot of fondness towards. Serena & Venus come across as regular teen girls, although very athletic & determined. So for that reason, I was really left feeling sad at the end of the book, with what seemed to be a lack of closure for the coach. Overall, a well-written account of the Williams sisters' transition from tennis players to champions, sometimes with detailed match reviews and some secret tennis training tips. Very intriguing read, sometimes hard to put down. Reccomended for all, especially tennis lovers.