Former world No. 7 David Goffin was feeling knee discomfort during his Sydney quarterfinal match against Andy Murray and he didn't want to risk anything.
Goffin, now ranked at No. 45 in the world, retired the match after losing the first set 6-2.
After taking a two-month break, Goffin returned to action in August.
Goffin played just two tournaments before calling it a season due to a knee injury.
Following a four-month break, Goffin returned to action in Australia.
“I started to feel something in my knee at the end of the match against Kudla, in the round of 16. I was scared today because my knee has been in pain for a long time and I was scared to put the full pressure on my knee. If you're worried, there's no point in continuing and that's why I retired. For now, I'm not worried about the Australian Open. We will work on it, I still have a few days to prepare," Goffin said after the match, per We Love Tennis.
Murray felt a bit sorry for Goffin
Murray progressed into the semifinal but he was a bit sad it came following a Goffin retirement.
“I think he’s missed the last eight months with injury,” Murray explained following the victory.
“I believe he had surgery on the elbow and then he’s had a problem with his knee for the last three or four months.
“Yeah, it sucks. The injuries as you get older, they can get you down a little bit. Hopefully he’s ok.”
Murray broke Goffin two times and lost no service games to comfortably win the opener.
"I think the movement is what I was most pleased with,” Murray said.
“I maybe made a few more errors than I would’ve liked today. But yeah I thought I moved well which was really positive.”