Kiki Bertens
Novak Djokovic, of Serbia, wipes sweat from his brow as he competes Hugo Dellien, of Bolivia, during the tennis competition at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo, Japan. (AP Photo/Patrick Semansky)
Grasping for air: Heat a major issue at Olympic tennis venue

By Andrew Dampf Jul. 23, 2021 11:48 PM EDT

Novak Djokovic, of Serbia, in the far court, practices at the Ariake Tennis Center ahead of the 2020 Summer Olympics, Wednesday, July 21, 2021, in Tokyo, Japan. (AP Photo/Alex Brandon)
Osaka makes her return against Zheng at Tokyo Olympics

By Andrew Dampf Jul. 21, 2021 11:25 PM EDT