Encouraging though it is to see the 21-year-old's mental strength, it's impossible to ignore the fact Zverev has shown in recent times he could do with being more efficient, using up more energy in the second round.
"I don't know how far I will go in the tournament but I'm confident", Del Potro said.
Australia's Alex de Minaur, world number 80, was no match for world number 1 Nadal, who defeated him 6-1, 6-2, 6-4 on Saturday as the Spaniard ensured to keep the top spot of the ATP ranking upon its release following the tournament, reports Efe.
Alexander Zverev avoided a shock Wimbledon exit as the world number three battled back to beat American youngster Taylor Fritz 6-4, 5-7, 6-7 (0/7), 6-1, 6-2 on Friday while top seed Roger Federer continued his good form, reaching the second week without dropping a set. For me, because it's such a closed court, for me the court is dark at 7.30pm.
"I think he's a future grand slam victor", Gulbis said.
With Edmund serving at 3-3, 15-40 in the fourth set, the Serbian approached the net and executed a drop volley that Edmund failed to reach on one bounce despite flailing at the ball with his racquet and knocking it close to the line on the other side of the net. I felt my mind go, you know, and move on. I'm trying to compete with him, trying to play against him, try to find ways. "I think (today) showed I am playing my best tennis". "I was feeling physically really good".
"What can I do?"
Kevin Anderson defeats defending champion Roger Federer at Wimbledon
Next up for the American will be Milos Raonic , who overcame Isner's countryman Mackenzie McDonald 6-3, 6-4, 6-7 (5/7), 6-2. Novak Djokovic wasn't definitely happy about having to play on No. 1 Court as third and last match of the day on Monday.
The second-round clash on Court One, which lasted three hours 12 minutes, was suspended on Thursday evening in fading light with the 20-year-old American Fritz leading 2-1 after taking a 56-minute third set.
"I'd rather go five than lose in four, be out of here, book a flight for me to go home tomorrow".
Despite being widely-tipped to be a Grand Slam threat, it was another letdown for Zverev whose run to the quarter-finals at Roland Garros last month remains his best performance at the majors. I'm playing third round tomorrow.
Gulbis' win on Saturday was his third successive five-setter having also played three matches in qualifying.
Rodina now faces and even tougher American challenge in meeting seven-time Wimbledon champion Serena Williams in the fourth round next week. Things happen. I thought after I won the third set, I'm going to get out with a win.
He added: "I think we were both struggling, to be honest".
"I'm very happy (to make the last 16 for the first time), long time I've been chasing for that", said Monfils, who will next face South African Kevin Anderson.