Agassi book is my favourite....can read it 2-3 times and not get bored. Very smooth.
The Blake and McEnroe ones are exceptionally good as well.
The Nadal, Becker, Nastase, Murray ones aren't that great.
Why fight over who is G.O.A.T., when the world is just an abstract of reality~ http://www.newgrounds.com/portal/view/525347