The 21-time major champion's team has a new look.
The World No.22's announcement surprised his teammates.
Eleven months after he was booted from the nation, Novak Djokovic bounced back in Australia.
Nick Kyrgios' late withdrawal from United Cup is par for the course suggests Stefanos Tsitsipas.
Runner-up in Davis Cup and Billie Jean Cup in 2022, Australia opens 2023 playing for United Cup.
Iga Swiatek is set for a wire-to-wire run at No. 1 says Martina Navratilova.
Nine-time Australian Open champion on career longevity.
