Iga Swiatek became the first-ever US Open champion from Poland.
Swiatek, at 21 years of age, became the youngest since Maria Sharapova (age 20 in the year 2008) to win her third major title.
The Polish star won her seventh title of the year, first to do so since Serena Wiliams in 2014.
Swiatek is also the first woman since Angelique Kerber in 2016 to win two major titles in one season.
Swiatek is only the ninth player of the Open Era to win her third major before turning 22.