World No.1 Novak Djokovic says the Olympics has the harshest playing conditions he's faced in his 20 year career

• Novak Djokovic says conditions at the Olympics are the harshest he's ever played tennis in.
• Athletes at the Tokyo Games have to play in 93 degrees Fahrenheit heat and oppressive humidity.
• One player asked if organizers would take responsibility if he died. Another left on a wheelchair.

World No.1 tennis player Novak Djokovic says the Olympics has the harshest playing conditions he's ever endured in his 20-year career.

Temperatures at the Tokyo Games have hit 93 degrees Fahrenheit this week and combined with humidity above 70%, tennis players have endured oppressive circumstances in which to play sport.

Djokovic said earlier this week that the conditions were "very tough," Daniil Medvedev asked a chair umpire if the sport's organizer would take responsibility if he died, and Paula Badosa left the court Wednesday on a wheelchair.

"I've played tennis now professionally for 20 years, and I've never faced this kind of conditions in my entire life on a consecutive daily basis," Djokovic said, according to The Telegraph.

"I did experience certain similar days, one day in Miami or New York, or sometimes it happens here and there, but it's one or two days, and then it passes.

"Here is every single day," said Djokovic. "So, it's really draining players' energy, and you just don't feel yourself."

The International Tennis Federation pushed tennis matches from 11.00 a.m. starts to 3.00 p.m. effective Thursday

"In my opinion, it should have been done a few days earlier," said Djokovic. "But it is what it is. It's better than starting at 11 a.m.

"It's not just in my opinion. I've spoken to six out of eight quarterfinalists in men's singles and everyone is in favor of starting later because the conditions are really brutal."

Djokovic continues his Olympic journey with a men's singles quarterfinal match against Kei Nishikori, and a mixed doubles match with partner Nina Stojanovic against German duo Kevin Krawietz and Laura Siegemund.

Both matches will take place Thursday at the Ariake Tennis Park.