On a day when British interest in the doubles draw was reduced to Dominic Inglot, the elder Murray revealed that his sunstroke scare two days before had begun with his own rookie error.
"My alarm didn't go off so I slept in about an hour-and-a-half later than I should have," Murray said, having lost his second-round doubles with John Peers 6-4, 6-4 to Eric Butorac and Raven Klaasen. "I was only woken up because the driver called the room to see where I was.
"That was 8.30. We were supposed to practise at 9.00 and I was on at 11.00, so I was rushing around and didn't have time to get breakfast. It didn't set me off on a good footing for the rest of the day."
Jamie admitted that the whole experience, which left him cramping badly in both legs and lying on the floor shivering, had been frightening and hinted that the missed alarm might not have happened if he had had the same team around him enjoyed by his brother.
But Andy said Jamie had been fortunate to make it to his first-round match. "He sets his alarm on his phone," he said. "He almost messed up his whole Australian Open [after] flying over here. He'll learn from that and probably never do it again. Always get someone to call the room. But he was fairly lucky and woke up in time. Well, he was actually woken up. They called him from downstairs because his car was there."
Meanwhile, Colin Fleming and Ross Hutchins squandered a 2-0 lead in the final set as they went out 4-6, 6-3, 6-2 to the No 7 seeds, Rohan Bopanna of India and Aisam-ul-Haq Qureshi of Pakistan, but Inglot and his partner Treat Huey of the Philippines eased into the third round with a 6-3, 6-7 (5-7), 6-1 victory over Italians Andreas Seppi and Potito Starace.
Hutchins, who in the first round had enjoyed an emotional first victory since recovering from cancer, was left with mixed feelings, saying: "There's huge disappointment first of all, but optimism also for the future because we know we're a good team."
Jamie Murray also lost his mixed doubles with Cara Black of Zimbabwe, going down 6-2, 6-4, to the fifth seeds Anabel Medina Garrigues of Spain and Bruno Soares from Brazil.
Britain's Davis Cup captain Leon Smith names his squad for next month's first-round tie against the United States on Tuesday and on form, Inglot should be there.