Cameron Norrie and Katie Boulter handed Britain a 2-0 win over hosts Australia on the opening day of the United Cup mixed team tournament Friday as the new tennis season began after a short break with the focus on next month's Australian Open. Spain beat Brazil 2-1 to start the revamped $10 million tournament that features 18 countries with ties also set to take place in Sydney. Norrie overcame a dip midway through his Group C clash with Alex de Minaur to prevail 6-4, 2-6, 7-6 (2) at the packed RAC Arena and snap his nine-match losing streak against opponents ranked inside the world's top 20. De Minaur's British girlfriend Boulter then settled the tie with a 6-2, 6-4 victory over Ajla Tomljanovic, who missed the majority of last season due to a knee injury that required surgery.