Nadal_King
Hall of Fame
I always wonder the mental edge and physicality which Djokovic still possess, if those are depleted or declined, how will his matches look and I think perfect example is Ao 2018 match against Chung. It was 3 close sets where in current circumstances Djokovic would have won with mental toughness and ability to give nothing in tiebreaks but in this match he basically was error prone and looked limited. I think he was returning from an elbow injury which can be a good reason. Backhand down the line was completely invisible.