TENNIS: Gauff sets up showdown vs. Osaka; Djokovic advances

Left: Cori “Coco” Gauff of the U.S. makes a backhand return to Romania’s Sorana Cirstea during their second round singles match at the Australian Open tennis championship in Melbourne, Australia, Wednesday. Right: Japan’s Naomi Osaka makes a forehand return to China’s Zheng Saisai during their second round singles match. (AP Photo/Lee Jin-man)

Serbia’s Novak Djokovic celebrates after defeating Japan’s Tatsuma Ito in their second round singles match. (AP Photo/Dita Alangkara)

Japan’s Naomi Osaka makes a forehand return to China’s Zheng Saisai during their second round singles match at the Australian Open tennis championship in Melbourne, Australia, Wednesday, Jan. 22, 2020. (AP Photo/Andy Brownbill)

MELBOURNE, Australia — Plenty was going badly for Coco Gauff in the second round of the Australian Open.