Grand Slam winner Emma Raducanu pulled out of the Auckland Open in New Zealand due to a back problem, causing a setback in her preparations for the Australian Open.
Raducanu, seeded sixth in the Auckland warmup, was due to play American Robin Montgomery in the first match of the evening session later Tuesday.
"I've tried my best to be ready. I love Auckland and the fans here. But unfortunately, I've picked up a back niggle and I won't be ready in time," the former U.S. Open champion said in a statement.
Raducanu has struggled with injuries since winning her only Grand Slam title in 2021 and skipped five tournaments in the WTA's Asia swing this year after suffering sprained ligaments in her foot.
The 22-year-old also spent most of last season recovering from ankle and wrist surgeries.