Four-time runner-up Andy Murray continued his quest for an elusive Australian Open crown after seeing off Joao Sousa in the third round on Saturday.
Seemingly unaware of events unfolding on Rod Laver Arena, where his father-in-law Nigel Sears collapsed during Ana Ivanovic's match, second seed Murray defeated Sousa 6-2 3-6 6-2 6-2 on Margaret Court Arena.
Play between Ivanovic - coached by Sears - and Madison Keys was delayed for almost an hour over at Rod Laver Arena as coach Sears unexpectedly collapsed in the stands before he was taken to hospital. Sears is said to be conscious and responsive.
But apparently oblivious to what was happening just metres away within the Melbourne Park complex, two-time grand-slam champion Murray advanced to his eighth consecutive last-16 match at the Australian Open.
Murray was tested early but the Brit soon pulled clear, earning two set points after Sousa sent a forehand long with an open court at his mercy, and he took full advantage as he wrapped up the opener in half an hour.
Despite his 0-6 win-loss record against Murray, Sousa did not drop his head, breaking after a lengthy first game and he stayed on top throughout to level the match.
Murray, however, rediscovered his groove in the third set, going up a break in the first game, a lead he did not relinquish to move two-sets-to-one up.
And the 28-year-old never looked back from that moment as he now awaits the winner of Bernard Tomic versus John Millman.
Murray  bt Sousa 6-2 3-6 6-2 6-2
Murray - 13
Sousa - 4
Murray - 41/32
Sousa - 27/44
BREAK POINTS WON
Murray - 6/9
Sousa - 2/7
FIRST SERVE PERCENTAGE
Murray - 59
Sousa - 67
PERCENTAGE OF POINTS WON ON FIRST/SECOND SERVE
Murray - 84/45
Sousa - 66/33
Murray - 122
Sousa - 94