World no 1 Novak Djokovic remains on course for a ‘Golden Slam’ after ruthlessly ending the dreams of home hope Kei Nishikori to storm into the Olympic semi-finals.
The 34-year-old Serbian, bidding to become the first man to win all four Grand Slam titles and an Olympic gold in the same year, breezed through 6-2 6-0.
He will now face Germany’s Alexander Zverev in the semi-finals on Friday.
Djokovic has never reached an Olympic final, and standing in his way is 24-year-old Zverev, who produced a display almost as impressive as the top seed to see off France’s Jeremy Chardy 6-4 6-1.
Russia’s Karen Khachanov, who beat France’s Ugo Humbert 7-6 (7-4) 4-6 6-3, will meet Spain’s Carreno Busta in Friday’s other semi-final at the Ariake Tennis Park.
Meanwhile, Switzerland’s Belinda Bencic and the Czech Republic’s Marketa Vondrousova will meet in Saturday’s women’s final.