Scot wraps up match in 90 minutes
Murray sees off big serving Aussie Groth
The Scot was in cruise control to sweep aside the home fans’ hopeful 6-0 6-4 6-1.
Groth, ranked 67, has the fastest serve ever recorded at 163mph, but Murray broke him in his first four service games and will face Portugal’s Joao Sousa for the third time in four years in the last 32.
There was further success for British players as Johanna Konta, who knocked out Venus Williams, beat China’s Zheng Saisai 6-2 6-3 to reach the third round.