Jared Donaldson ended Gilles Simon's hopes of a second Sydney International title, while Chung Hyeon advanced at the Auckland Open.
While Andy Murray is out of the Australian Open, Stan Wawrinka – like Rafael Nadal – is raring to go in Melbourne.
As Andy Murray starts his rehabilitation from hip surgery, we look at how some other giants of the men's game fared after lay-offs.
Spaniard Rafael Nadal was left upbeat despite suffering a loss at the Kooyong Classic.
He will miss the Australian Open and likely the French Open after surgery, but Andy Murray is relishing his rehab.
Three-time grand slam champion and former world number one Andy Murray has undergone hip surgery.
Sloane Stephens failed to stop the rot at the Sydney International, Camila Giorgi thrashing the US Open champion in the first round.
Veteran Spaniard David Ferrer reached the second round of the Auckland Open, where he can become the first man to win the title five times.
Victoria Azarenka's absence was confirmed as she joined reigning champion and 23-time major winner Serena Williams on the sidelines.