Medvedev defeated Italy's Fabio Fognini 6-2, 3-6, 6-2 to set up a last-eight meeting with Pablo Carreno Busta of Spain at Ariake Tennis Park.
After registering a routine first-round win, the World No 1 urged for the matches to be scheduled later in the day to counter the heat and humidity.
Roger Federer won the last of his 20 Grand Slam titles in Wimbledon 2017 by beating Marin Cilic.
After a number of big names pulled out of the upcoming Olympics, Novak Djokovic’s participation will be a big boost for tennis fans across the world.
On the back of winning his sixth Wimbledon title and 20th Grand Slam crown, Novak Djokovic secured his 14th qualification for the season finale.
Former World No. 2 Goran Ivanisevic was all praise for Novak Djokovic after he won his sixth Wimbledon title and 20th Grand Slam crown.
Novak Djokovic can achieve the calendar slam in Tennis if he can win the US Open in 2021.
July 11 saw Argentina win the Copa America title after 28 years while Italy ended their 53-year wait for the Euro 2020 championships.
Novak Djokovic has drawn level with Roger Federer and Rafael Nadal with 20 Grand Slam titles after winning Wimbledon.
The Serbian World No.1 fought back from a set down to beat in-form Italian player Matteo Berrettini to win the record trophy in four sets.