Switzerland won the Hopman Cup on Saturday as Roger Federer and Belinda Bencic got the better of Alexander Zverev and Angelique Kerber.
In her final tournament outing before the Australian Open, Simona Halep beat Katerina Siniakova to the Shenzhen title.
Aliaksandra Sasnovich performed admirably to reach the Brisbane International final, but proved no match for Elina Svitolina.
There will be a new Brisbane International champion after Nick Kyrgios set up a final with Ryan Harrison by beating Grigor Dimitrov.
Rafael Nadal's coach Carlos Moya said the Spanish superstar would be ready for the Australian Open.
Gael Monfils and Andrey Rublev will contest the Qatar Open final after Dominic Thiem pulled out through illness.
Germany scraped past Australia, while Eugenie Bouchard sustained a buttocks injury at the Hopman Cup.
The winner of five titles in 2017, Elina Svitolina is in position to claim her first of 2018 after beating Karolina Pliskova in Brisbane.
Grigor Dimitrov was quick to react when Kyle Edmund was injured, going on to beat the Brit in the Brisbane International quarter-finals.
Katerina Siniakova battled her way past Maria Sharapova and the defending champion will now face Simona Halep in the Shenzhen Open final.