The 18-year-old American, who reached her first Grand Slam final at the Roland Garros earlier this month, registered a 7-5, 6-4 win over fourth seed Pliskova in just one hour and 37 minutes.
Poland's Iga Swiatek expanded her lead at the top of the WTA rankings released on Monday after her French Open triumph in Paris over American Coco Gauff.
Caroline Garcia and Kristina Mladenovic of France on Sunday ended their French Open women's double campaign with a title win over 8th-seeded Americans Coco Gauff and Jessica Pegula by 2-6 6-3 6-2.
After claiming her 35th successive match victory and sixth consecutive title on Saturday against Coco Gauff in Paris, the Polish star Iga Swiatek said that watching how Rafael Nadal has met success and failure had helped to shape her own path to the highs and lows of life on tour.
2016 champions Caroline Garcia and Kristina Mladenovic came back from a set down for the third time to win their home major, overcoming Coco Gauff and Jessica Pegula in the Roland Garros women's doubles final.
French Open women's champion Iga Swiatek said she was "overwhelmed" when she saw that Poland striker Robert Lewandowski was in attendance to witness her claim a second Grand Slam title in Paris.
World Number 1 Iga Swiatek expressed happiness following her second French Open title win after defeating American teenager Coco Gauff in the finals of the Roland Garros 2022.
Iga Swiatek takes her second French Open title by winning a staggering 35th consecutive match, tying Venus Williams for the best winning streak this century.
Paris [France], June 4 (ANI): World No. 1 Iga Swiatek clinched her second French Open title on Saturday after she registered a dominating straight-sets victory over No.18 seed Coco Gauff in the women's singles final of Roland Garros 2022 here at the Philippe Chatrier court in Paris.
Paris [France], June 3 (ANI): American teen sensation Coco Gauff has appealed to put an end to gun violence in the United States after she defeated Italian Martina Trevisan to reach the French Open final on Thursday.