British number one Andy Murray saw off German teenager Alexander Zverev with ease to reach the second round of the Australian Open in Melbourne.
Murray, 28, dominated throughout against the former junior world number one to secure a 6-1 6-2 6-3 victory.
The world number two will now face Australian Sam Groth, holder of the game's fastest serve, on Thursday.
Murray joined fellow Briton Johanna Konta in the second round but Dan Evans and Aljaz Bedene both went out.
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