Tsitsipas once again showing that he has a loser mentality. He was leading Djokovic 4:0 in second set and up 40:0 and managed to lose the set and the match 3:6, 6:7.
Same goes for the other loser Sakkari, who had her path opened to a medal by some of the favorites being eliminated, only to lose to low rate Kostyuk from Ukraine.