Swiatek, a four-time French Open champion at Roland Garros, went into Thursday’s match at a sweltering Court docket Philippe Chatrier on a 25-match win streak in Paris.
The 23-year-old had additionally defeated Zheng in all of their six earlier conferences.
Nevertheless, she was hit off the courtroom by the highly effective 21-year-old Australian Open finalist who broke the Pole 3 times within the opening set.
Swiatek appeared restored by a 10-minute break and rapidly stretched out to a 4-0 lead within the second set earlier than Zheng battled again, retrieving each breaks for 4-4.
The Chinese language star broke once more for a 6-5 lead towards the error-plagued Swiatek and claimed victory within the subsequent recreation, having reeled off seven video games in succession.
By making the ultimate, Zheng is the primary Chinese language man or girl to achieve an Olympic singles gold medal match, bettering the run of Li Na who completed fourth within the ladies’s occasion at Beijing in 2008.
Swiatek was left to rue her 36 unforced errors in a tie the place she additionally dropped serve six instances.