Re: Why does Djokovic need to be on the verge of losing to play his best ?
There is a better explanation of that, which I concur with 100%, in this great article:
Novak Djokovic nº1!
The Golden Era of Novak: Australian Open * Dubai * Indian Wells * Miami * Belgrade * Madrid * Rome * Wimbledon * Montreal * US Open * Abu Dhabi * Australian Open * Miami * Toronto * China * Shanghai * World Tour Finals 2012 * Australian Open 2013 * Dubai * Montecarlo * Beijing * Shanghai * Paris * WTF * Indian Wells * Miami * Rome * WIMBLEDON 2014 * AUSSIE OPEN 2015
Federer to Nole: "Amazing year. Amazing tournament. Amazing match. You are THE BEST!"