Sorry I've been in and out with tennis writing and checking on comments. Unfortunately I've been able to see very little of the WTF.
I think you're right about Djokovic's efforts to get to the net more, so let me pass along a set of numbers with this for a moment:
At his 2012 Australian Open semifinal victory, Djokovic converted 21 of 28 net opportunities in the five sets (50 games) that were played.
At the recent U.S. Open loss, Djokovic converted 39 of 56 net opportunities in the five sets (50 games).
Obviously there is a difference in surfaces that likely played a factor in increasing his trips to the net, but a lot of this also is attributed to Murray's improved play. Djokovic probably feels he needs to be more aggressive and dictate--which he did much better in the third and fourth sets. (I would have to rewatch those sets to see how his net approached factored in--like which set-up shots allowed him to get to the net easier.)
I realize this is only one common opponent and Djokovic can defeat different players with different patterns, but it's certainly something we can keep an eye on. What's interesting is I'm not sure if going to the net more often is necessarily going to translate to the kind of dominance of 2011. But I do think it's necessary for the greats to keep evolving whether to adjust to new opponents or conditions or to give them more purposeful training to increase their edge.
I apprecitate the 'like' for my Rafa-Djoker MC article. It's a real compliment coming from someone of your intellect. (Still love the depth in your historical comparisons last month!) Thanks again.
Thank you for liking my article Marko!