Nice article, good analysis on the german´s game. If you are interested in honest reader feedback, here it is:
1) A few typos here and there. It could make a difference in the battle for an audience, so I guess is worth the effort of one more revision...
2) The "mental" part seems to be an important part of his game. I guess most readers will react saying something like "all he needs to do is to put his head on his place". It was not your focus, I know, but when talking about such players I guess you need to warn your readers that you´re not touching the subject.