Andy Murray said it was difficult to prepare for his fourth-round Australian Open match against Bernard Tomic after his father-in-law Nigel Sears collapsed on Saturday.
Two-time grand-slam champion Murray advanced to the quarter-finals via a 6-4 6-4 7-6 (7-4) win over Tomic on Monday, just 48 hours after Sears was dramatically hospitalised following a fall at Melbourne Park.
Murray was in action on Margaret Court Arena when Sears - also Ana Ivanovic's coach - fell in the crowd at Rod Laver Arena, forcing the women's third-round match to be delayed for almost an hour, with Murray seemingly unaware of the events unfolding just metres away.
Sears, 58, was later given the all clear to return home to the United Kingdom.
And speaking about the incident for the first time after setting up a last-eight showdown with David Ferrer, Murray said: "It's been a tough few days.
"I went to the hospital immediately after the match, and then went to the hospital again in the morning.
"Sort of the day after I went to the hospital for a few hours, and after that just came back to practice here in the afternoon."
Asked if he was always going to play against Tomic following the events over the weekend, Murray added: "Obviously it depended on Nigel's health. If the news was not positive, then, no, there was absolutely no chance I would have kept playing.
"Like I said, it was a tough few days. Certainly wasn't straightforward. I'm just glad that he's on his way home now and can be back with his family."