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John Isner

Murray advances, Raonic beats Wawrinka in Australia

In the darker moments, when the medical needs of his family were becoming more urgent, Andy Murray thought about leaving the Australian Open before the fourth round.

The stress was obvious Monday, when an agitated Murray yelled and berated himself repeatedly and had trouble dealing with Bernard Tomic's unusual style before advancing to the quarterfinals with a scrappy 6-4, 6-4, 7-6 (4) win.

"The last few days were very, very tough. A lot of emotions, things sort of changing all of the time in my head," Murray said. "It's been a stressful few days, but I'll try to rest up the next few days to get ready for the next one."

Murray's wife, Kim, is due...