British No 1 Johanna Konta was forced to retire injured during her first-round match at the Australian Open.
The British No 1 won the first set 6-4 but was forced to concede the match after falling 2-0 behind in the second.
Konta appeared to sustain or exacerbate the injury when she stretched for a smash towards the end of the opening set, and required an on-court medical time-out.
The 13th seed then left the court for treatment at the end of the set, and swiftly decided not to continue after losing her opening service game.
Having recently reunited with her former coach Dimitri Zavialoff, hopes were high that the 29-year-old would be able to get her new campaign off to an encouraging start.