Djoko is completely out of shape according to the numbers in this article:
http://www.atpworldtour.com/en/news/indian-wells-2018-sunday-djokovic-daniel
"He [Daniel] advanced after two hours and 30 minutes, firing 20 winners while benefitting from an uncharacteristic 61 unforced errors from Djokovic."
Is it real or a typo? How can you commit 61 UFE in three short sets?
Also, in first set while coming back from 2-5 down, Daniel benefitted from a "very poor smash". Clearly that mis-smash has given Daniel the first set. Poor smashing and serving is the first sign of hand extension problem or a pain preventing hand extension. Would it be an indication Djoko returned to play too early after a surgery?