If I had to use one word to summarise Harrison's two volume set on defending it would be "mixed". On the negative side, both volumes contain numerous irritating typos. More significantly, both books appear to be composed mainly of rather shoddily edited together plans of defensive coaching sessions where it's sometimes unclear to which diagram the text relates. Each section follows the same format of a diagram followed by a numbered set of bullet points which makes the books rather tedious to read. Volume 1 starts off (sensibly) with 1 v 1 , 2 v 1, etc. but then goes on to present chapters on 4 v 4, then N v N with seemingly every combination in between - given that the key defending principles are the same for each setup, it's difficult to see the rationale for this compendious any-number versus any-number treatment... unless you take the cynical view that what is really one volume's worth of material has been spun-out into two volumes for commercial reasons. Several of the chapters in both volumes are either identical or very similar which makes the padding-out to two volumes thesis hold even more water. That said, the two volumes taken together contain a wealth of valuable information on defensive coaching - the downside being the poor and overly long presentation together with the need to buy two volumes when one concisely written volume could have become a classic "must have" for every coach's bookshelf. So: a wealth of information but it's hard work extracting it!