Andy Murray has secured his place in the third round of the Australian Open with a routine straight-sets victory over Ukrainian Illya Marchenko.
Marchenko, ranked 79 in the world, promised "trouble" for the British number one beforehand, but it never really materialised as Murray won 6-1 6-3 6-3 without ever hitting top gear.
The fifth-seeded Scot will meet Spain's Guillermo Garcia-Lopez next as he continues his bid to land a first grand slam crown.
After Murray sprinted through the first set in front of a raucous sell-out crowd on Margaret Court Arena, taking it in just 29 minutes, it was important Marchenko made a strong start to the second if the match was not to run away from him - and he did just that, holding to 30.
He continued his improvement in the next game, two booming forehands and a crunching backhand giving him three break points - his first of the match. Murray saved two but not the third as he netted a routine backhand to give the Ukrainian a 2-0 lead.
Marchenko promptly undid all his hard work, however, a horrible shank on break point getting the set back on serve. Murray again looked vulnerable at 1-2 but two big first serves got him out of trouble.
Both players were becoming irritated by the line-calling, and with the court not having Hawk-Eye there was no method of appeal.
Marchenko got a particularly bad call in the first point of the fifth game, prompting the incensed Ukrainian to tell the official to "open your eyes". The incident seemed to affect the 23-year-old from Dneprodzerzhinsk and he lost his focus, losing his serve after dumping a weak forehand into the net.
Murray held before seeing a break point at 4-2 come and go as Marchenko held him at bay. And although Murray was looking far from comfortable on serve himself, he managed to make it 5-3 and then took the set by breaking Marchenko due to a wayward forehand which flew beyond the baseline.
A tight start to the third set was ended when Murray broke to love to establish a 4-2 lead. He almost clinched the match with Marchenko serving at 3-5 down, one stunning forehand pass on the run bringing the crowd to its feet, but he made no mistake in the next game as he clinched victory after one hour and 57 minutes.