Germany's Zverev ousts Khachanov to win men's tennis Olympic gold

Alexander Zverev followed up his comeback win over Novak Djokovic by winning the gold medal in men's tennis at the Tokyo Olympics.

The fifth-ranked German overwhelmed Russian opponent Karan Khachanov 6-3, 6-1 at the Tokyo Games on Sunday for the biggest title of his career.

The six-foot-six Zverev controlled the match with his big serve and a confident two-handed backhand, never really giving the 25th-ranked Khachanov a chance.

WATCH | Zverev defeats Khachanov to claim gold in men's tennis 

Zverev's previous best performance was reaching the final of last year's U.S. Open, where he wasted a two-set lead in a five-set loss to Dominic Thiem.

IOC president Thomas Bach watched his fellow German win the title as a group of about 10 anti-Olympic protesters across the street from the Ariake Tennis Park made themselves heard inside Center Court. Play was not interrupted.

Czech Republic wins women's doubles gold

Czech Republic's Barbora Krejcikova and Katerina Siniakova beat Switzerland's Belinda Bencic and Viktorija Golubic 7-5, 6-1 in the women's doubles tennis final in Tokyo on Sunday to clinch their country's first Olympic gold medal in the sport.

WATCH | Canada's Auger-Aliassime reflects on comepting at Tokyo Olympics:

The victory for the top-seeded Czech team and three-time Grand Slam champions put an end to Bencic's dream of making it a Swiss double golden success, after she triumphed in the women's singles final a day earlier over Krejcikova and Siniakova's compatriot Marketa Vondrousova.

But it helps continue a dream summer for Krejcikova who took home both the women's singles and doubles trophies at this year's French Open. She and Siniakova also won the 2018 French Open and Wimbledon.

Brazilians Laura Pigossi and Luisa Stefani won the bronze on Saturday, claiming their country's first tennis medal with a win over Veronika Kudermetova and Elena Vesnina of the Russian Olympic Committee.