Johanna Konta is out of the Australian Open after being forced to retire from her first-round match against Kaja Juvan with injury.
The British number one was serving for the first set when she had to leave court to seek medical attention.
Although she managed to get the points required to take the first set, she needed more treatment immediately afterwards for what seemed to be an abdominal problem.
World number one Barty will not defend WTA Finals title
- 'Worrying times' - Azarenka struggles to breathe, taken off court
- Brilliant Barty thrashes Kovinic with double bagel
And after falling behind 2-0 in the second set the 29-year-old was unable to continue.
Highlights: Konta retires from first-round match due to injury
Konta confirmed in her post-match press conference it was an abdominal issue, saying she had only experienced that kind of problem once before, at the end of 2016.
"I felt it in kind of my second service game of the first set, so then I was just conscious of trying to adapt while using my legs more on my serve," she told the media.
"And then my second-last service game of the first set, that's when it started to get quite painful, and I then again tried to just manage it the best I could, but then in my last service game of the first set, that's when I needed to intervene with the physios to try and offload it in any way with tape and things like that.
"I don't have answers for you of why this happened. I don't know, to be honest. I haven't had an ab issue in a very, very long time, so, yeah, I don't know."
Konta on injury: It was like an out-of-body experience
A head-turning offer for head-turning tennis. One-month premium subscription for just 99p on the Eurosport app and eurosport.co.uk
'I liked what Novak said' - Medvedev backs Djokovic over vaccine being 'personal'
Raducanu preparing hectic schedule ahead of Australian Open debut