U.S. Open finalist Karolina Pliskova

(Reuters) - Factbox on Czech Karolina Pliskova, who will contest her first grand slam singles final in the U.S. Open women's final on Saturday against second-seeded German Angelique Kerber. Born: Louny, Czech Republic, March 21, 1992 (Age: 24) Seed: 10 BEST GRAND SLAM PERFORMANCES: U.S. Open final (2016), Australian Open third round (2015, 2016) EARLY LIFE Began playing tennis at the age of four and went on to win the girls' singles title at the 2010 Australian Open where she beat Britain's Laur