United Cup tennis results

SYDNEY, Jan. 6 (Xinhua) -- Following are the results from the inaugural ATP-WTA mixed teams United Cup on Friday:

Semifinals (best of five ties)

United States 2 Poland 0

Jessica Pegula, United States, bt Iga Swiatek, Poland, 6-2, 6-2

Frances Tiafoe, United States, bt Kacper Zuk, Poland, 6-3, 6-3 Italy 2 Greece 0

Martina Trevisan, Italy, bt Maria Sakkari, Greece, 6-3, 6-7 (4/7), 7-5