The inaugural United Cup has teams from 18 countries competing in Brisbane, Perth and Sydney through to Jan. 4 SYDNEY: Taylor Fritz and Madison Keys have given the US a 2-0 lead over the Czech Republic at the new United Cup mixed teams tennis tournament on Thursday. For the latest updates, follow us on Twitter @ArabNewsSport Fritz broke Jiri Lehecka’s serve in the ninth game of the second set and went on to beat the Czech player 6-3, 6-4. Keys followed that up with a 6-4, 6-3 win over Marie Bouzkova in the next Group C match at Ken Rosewall Arena in Sydney. Two singles matches — one men’s and one women’s — will be played over each of two days, with a mixed doubles to conclude the five-match encounter on the second day. “In a team event, first match of the year, there are always some nerves coming out, so it is great to come out and get the team ahead,” Fritz said. “Hopefully loosen everyone else up. It is a tough position to play if behind, so it is really good for the team.” Fritz saved both break points he faced in his first head-to-head meeting with the 21-year-old Lehecka. ”When I was down, I felt that I was coming up with big serves when I needed the free points,” Fritz said. “I don’t think from the ground I maybe played my best, but when I was down break point or 0-30, I was coming up with big serves.” The US are the third-seeded team in the tournament and also features world No. 3 Jessica Pegula and men’s No. 19 Frances Tiafoe. On Friday in singles against the Czechs, Pegula will take on two-time Wimbledon champion Petra Kvitova and Tiafoe plays Tomas Machac. Pegula and Fritz are scheduled to play mixed doubles for the US. The inaugural United Cup has teams from 18 countries competing in Brisbane, Perth and Sydney through to Jan. 4. The three city champions and the next-best performing country from the group stage will meet at Ken Rosewall Arena from Jan. 6 to 8 to determine the overall winner. Top-seeded Greece is led by world No. 3 Stefanos Tsitsipas and No. 6-ranked woman Maria Sakkari. World No. 1 Iga Swiatek and No. 11 Hubert Hurkacz will lead second-seeded Poland. Rafael Nadal will team with world No. 13 Paula Badosa for Spain, while Italy will have world No. 16 Matteo Berrettini and Martina Trevisan. Each host city will feature two groups of three countries competing in a round-robin format.