When play was suspended on Thursday, Zverev was two sets behind to one down on Court 1 but fought back to defeat the American youngster 6-4 5-7 6-7 6-1 6-2, in a match lasting over three hours.
The fourth seed had a tougher time against Fritz than eighth seed Kevin Anderson did against Philipp Kohlschreiber, with the German served into straight-sets submission 6-3, 7-5, 7-5. This is Gulbis' best performance at Wimbledon in 11 attempts and his win yesterday put him joint-second on the list of players with the most attempts before reaching the round of 16.
The three-set duels continued when Czech star Safarova lost a one-set lead to Makarova, who came back to win 4-6, 6-4, 6-1 and set up a meeting with Giorgi.
"I won the fourth and fifth sets easily".
Gulbis is now ranked 138th and he is the first qualifier in the last 16 at Wimbledon since Brian Baker in 2012.
Nishikori played some of his best tennis in the first week of Wimbledon and has deservedly won through to the round of 16.
Zverev said he was returning much harder on Friday, rushing Fritz and giving him less time to react.
British couple sickened by same poison used on Russian spy
Salisbury is a short distance from Amesbury where Dawn Sturgess , 44, and her partner Charlie Rowley , 45, fell ill last Saturday .
Hsieh of Taiwan protested to the Chinese umpire in a language that Cibulkova couldn't understand, before the match referee became involved as calls of "replay the point" came from a bemused crowd on Court 18.
Having been upset at missing out on a seeding at the start of the tournament, the Slovakian was angered when a crucial ruling went against her during the first set of a 6-4, 6-1 fourth-round victory over Hsieh Su-Wei on Monday. I started to play smarter.
He was beaten in the fourth round a year ago.
"I think he's a future grand slam victor", Gulbis said.
The mercurial Frenchman beat last year's semi-finalist 5-7 6-4 6-4 6-2 on Centre Court.
Estonia's top tennis player Anett Kontaveit (WTA 27) won against US tennis player Jennifer Brady (WTA 74) on Thursday, advancing to the third round of the Wimbledon tennis tournament.
In the women's draw, the latest of the seeds has been eliminated as American Madison Keys, seeded 10, succumbed to a 7-5, 5-7, 6-4 defeat at the hands of Russian Evgeniya Rodina.