Team USA have secured their place in the final of the first United Cup and Taylor Fritz believes they are the tournament favourites.This new team event incorporates 18 countries taking part in a series of mixed team-events across three cities in Australia.Each tie is made up of two ATP and two WTA singles matches between the No.1-ranked players and No.2-ranked players of each team and one mixed doubles match. If the tie is even at 2-2 after singles, the mixed doubles match then decides the winner.Team USA has been led by ATP players Taylor Fritz and Frances Tiafoe and WTA stars Jessica Pegula and Madison Keys who have all played their …