Team Europe made it back-to-back Laver Cup titles thanks to wins by Roger Federer and Alexander Zverev.
Kiki Bertens claimed her seventh WTA Tour title and third of the year after a win over Ajla Tomljanovic in the Korea Open final.
Great Britain's Andy Murray will participate in tournaments in Shenzhen and Beijing, but will skip Masters events in Shanghai and Paris.
Serena Williams could already claim to be the greatest tennis player in history – with the prospect of several more titles still to come.
Serena eclipsed Steffi Graf after prevailing 6-4 6-4 over older sister Venus in an all-Williams affair at Melbourne Park on Saturday.
While she could not stop Serena at the Australian Open, Venus Williams took plenty away from her return to the spotlight in Melbourne.
Serena Williams seized the first opportunity to enjoy her long-awaited 'Jordan status' after winning a 23rd grand slam crown.
Record-breaking Serena Williams said she would not have one grand slam title without her sister Venus.