Zverev defeated Anderson 6-4, 6-4 and captured his fourth title of the year in the finals played on Sunday.
Venus Williams continued her astonishing late-career revival by felling Anastasia Pavlyuchenkova 6-4, 7-6(3) on Tuesday to reach her first Australian Open semi-final in 14 years.
Zverev, who is looking for his fourth tournament win of the year, needed only 64 minutes to defeat Nishikori and move into the final in WashingtonDC where he will play Kevin Anderson after the South African beat Jack Sock by the same score.
It was back in 2003 that Serena Williams first stamped her name on Australian Open history, the then 21-year-old taking down sister Venus to bring home her first title on the blue courts of Melbourne Park.
Images from Sunday's action at the Australian Open in Melbourne.
Seeing world number 50 Mischa Zverev and wildcard Denis Istomin upset the top two players in the world at Melbourne Park shows more players believe they can take shake up the established order and that can only be good for tennis, says Roger Federer.
Maria Sharapova and world No 1 Serena Williams haven't played each other at the Wimbledon Championships since their Round of 16 clash in 2010.
Frenchman Benoit lost his temper in the third game of the second set when top seed Tsitsipas halted the match to attend to a broken shoe lace.
Federer, who skipped the entire clay court season after winning the Australian Open and claiming titles at Indian Wells and Miami this year, will next play defending champion Florian Mayer who beat Frenchman Lucas Pouille in three sets.
Defending champion Donna Vekic, of Croatia, earned a hard-fought win over British wild card Gabriella Taylor 7-5, 5-7, 7-6(3).
Images from the women's singles quarter-finals at Wimbledon on Tuesday.
The latest tennis rankings have been announced by the ATP and WTA
Grand Slam finalists Garbine Muguruza and Roberta Vinci stormed into the last four of the Wuhan Open in China on Thursday while Venus Williams ended the giant-killing run of Briton Johanna Konta.
Keys and Stephens to put friendship to grand slam test
Sania Mirza and Martina Hingis on Thursday claimed that the decision to end their astonishing partnership was due to the failure to achieve the "desired results" and added they would play together one last time in the season-ending WTA Finals in October.
Twenty-five years on, Coca-Cola is involved in a new search. Arnab Dutta reports.
'He has poured his blood, sweat and tears in Padmavati.' 'Now he has left the matter in the hands of his producers.'
La Liga champions Barcelona began the new campaign with a 3-0 win over Alaves on Saturday with the help of a spectacular under-the-wall free kick from Lionel Messi, who scored twice, and a curling shot from substitute Philippe Coutinho.
The top posts on social media from your favourite Bollywood celebrities.
Top seed Roger Federer reached the Halle Open semi-finals on Friday, beating defending champion Florian Mayer 6-3, 6-4 and edging closer to a ninth title at the Wimbledon tune-up event.
A look at the top tweets from your favourite Bollywood celebrities.
Nadal needed all his experience to keep Pouille at bay in the decider and the match looked to be heading for another tiebreak before he pounced to break Pouille's serve for the first time to go 6-5 up in the third.
Rediff.com gives you a throwback to an eventful 2017, in pictures.
Maria Sharapova will be back in the US Open spotlight on Wednesday hoping she can come up with a winning encore to her electrifying first round victory over second seed Simona Halep.
GenNext designer Sumiran Sharma, 30, of ANAAM talks about his collection, design inspiration and why he wants to style Kangana Ranaut.
Seven-time champion Serena Williams endured an unlikely scrap in her Wimbledon opener and will look to shake off more rust in the second round on Thursday when she faces another qualifier in 18-year-old Kaja Juvan.
Naomi Osaka eased into the second round of the Italian Open on Monday with a 6-0, 6-3 victory over former world number one Victoria Azarenka, on a day in which local favourite Roberta Vinci called time on her career.
Indian tennis star Sania Mirza received a confidence booster ahead of the US Open Grand Slam tournament beginning, on Monday, with a doubles title victory at the Connecticut Open with Monica Niculescu of Romania, in New Haven, USA.
Top seed Roger Federer will challenge for a ninth Halle Open title after reaching the Wimbledon warm-up event final with a 6-4 7-6(5) victory over rising Russian talent Karen Khachanov on Saturday.
Images from Day 2 of the Australian Open in Melbourne on Tuesday
Images from Day 1 of the Australian Open in Melbourne on Monday.
A rampaging Roger Federer delivered a stunning reminder of his class at the Australian Open on Friday with a crushing 6-2, 6-4, 6-4 win over Tomas Berdych to storm into the fourth round.
Two celebs, two similar outfits...which one gets your vote?
The Scot lost 6-4, 6-4 to Richard Gasquet in his first singles match since January before saying he had turned down a wild card into the men's draw at the year's final Grand Slam.
Other nominations include Dunkirk, The Post and I, Tonya.
A roundup of the best dressed celebrities who took fashion to a whole new level at the AMFAR New York Gala 2016.
A summary of sports events and sportspersons, who made news on Tuesday.
Russian sixth seed Anastasia Pavlyuchenkova claimed her third title of the year by beating seventh-seeded Australian Daria Gavrilova in the final of the Hong Kong Tennis Open on Sunday.
PHOTOS from day seven of the Wimbledon championships at the All England Lawn Tennis and Croquet Club in London on Monday
Summary of sports events and persons who made news on Tuesday