World number nine Taylor Fritz battled past Italian Matteo Berrettini with a powerhouse performance to steer the United States to the inaugural mixed teams United Cup title in Sydney on Sunday.

Frances Tiafoe and Jessica Pegula both won their singles rubbers to give their country a 2-0 lead in the best-of-five tie with Fritz delivering victory by winning 7-6 (7/4), 7-6 (8/6).

United States' Taylor Fritz is embraced by teammates after defeating Italy's Matteo Berrettini during the final of the United Cup tennis event in Sydney, Australia, Sunday, Jan. 8, 2023. (Photo: AP)