The only time she looked even the slightest bit shaken Saturday at Court Philippe Chatrier was after her 6-1, 6-3 victory against Coco Gauff in the final was finished, pushing the No. 1-ranked Swiatek's winning streak to 35 matches and her French Open title count to two.
That's when the tears flowed, first during the Polish national anthem -- Swiatek is the only player from that nation to win a Grand Slam singles title -- and, again, during the trophy ceremony.
"I just told Coco, 'Don't cry,'" said Swiatek, who claimed the 2020 French Open while still a teen and ranked outside the top 50, "and what am I doing right now?"
"Stay strong, because the world is still there," Swiatek told Ukrainians, whose blue-and-yellow flag is represented by a ribbon of those colors she has been wearing on her white cap during matches.
Gauff, an American appearing in her first major final at age 18, and just weeks removed from celebrating her high school graduation with cap-and-gown photos near the Eiffel Tower, never stood much of a chance.
Swiatek's unbeaten run stretches back to February and equals one by Venus Williams in 2000 as the longest this century.
"The past couple months have truly been amazing and you totally deserve it," said the 18th-seeded Gauff, now 0-3 against Swiatek, told her 21-year-old opponent, then added with a chuckle:
Having won her past six tournaments, improving to 42-3 this season, Swiatek has emerged as a dominant figure in tennis, with 23-time Grand Slam champion Serena Williams out of action for nearly a year
That allowed Swiatek to move up to the top of the WTA, and she has shown she is a deserving resident there. "Two years ago, winning this title was something amazing.