The "Bulls" caught a perfect start on the road as they marked the opener with fortunate assistance from goalkeeper Christian Mathenia, whose misplaced pass allowed Haidara to make it 1-0 with just three minutes played.
The Japanese superstar fired 35 winners to 17 unforced errors to take down the American.
"It was a very good match, very good competing, as well. In the third and fourth sets, I just felt like he also raised his level," Coric said. "He was playing some really, really good tennis, because I thought I was not actually playing bad. I just thought he was too good in the third and in the fourth sets."
"The big thing for me was to be the aggressor and to be okay with making unforced errors," said Osaka. "Apparently I didn't make that many. Just to accept the unforced errors because I know that I'm going for shots."
Qingdao pulled one back in the 85th minute with an overhead kick from French midfielder Romain Alessandrini.
Corinthians are one of the most successful soccer clubs in Brazil, having won the national Serie A title seven times. Enditem
The result left Palmeiras in sixth place, behind Flamengo on goal difference while Sport were 14th with 11 points.
Fans of Shandong Luneng cheer for their team during the 10th round match between Shandong Luneng and Shanghai Greenland Shenhua at the postponed 2020 season Chinese Football Association Super League (CSL) Dalian Division in Dalian, northeast China's Liaoning Province, Sept. 9, 2020. (Xinhua/Long Lei)
Saturday ends with newly-promoted Cadiz, who on Wednesday drew their last friendly of the summer 1-1 with Almeria, at home to Osasuna.
Higuain is a free agent after he and Italian giants Juventus mutually agreed to terminate his contract a year ahead of its expiry.
Monday sees two more matches with Chelsea travelling to Brighton, while Sheffield United entertain Wolves. Enditem