The 35-year-old joins Marcelo Melo at the top of the ATP doubles rankings.
World No. 2 talks primary motivation.
The German scored a knockout, the Aussie scored a sympathy hug.
"The big guys may not get such a cruisy draw," says Brisbane champion.
The coach of Serena Williams says she needed more time after complications during her baby's birth.
Andrey Rublev will skip the ASB Classic at Auckland due to a right arm injury.
The Serb shows off his fitness on the Aussie Open practice courts.
