This would have worked brilliantly as a series of features in the Observer (the paper the author works for). As a book, I just feel it has too much filler. For instance there are weird interludes about the hotels Mitchell stays in, or how he gets drunk at their bars. What this has to do with the fight I have no idea..
He's a good writer, but I would be cautious about buying this book. It's ok, but no more than that.