Novak Djokovic came from a set down to win his opening-round Australian Open match - his first victory with three-time Grand Slam champion Andy Murray in his coaching box.
The Serb beat 19-year-old American Nishesh Basavareddy 4-6 6-3 6-4 6-2.
Djokovic, 37, has enlisted the help of his former long-term rival as he pursues a record-extending 11th Australian Open title, as well as a 25th major which would put him clear of Australia's Margaret Court in terms of all-time victories.
"I'm thrilled to have him in my corner," said Djokovic, who will face Portugal's Jaime Faria in the second round at Melbourne Park.