Nick Kyrgios' return to the Australian Open is in doubt after he withdrew from an exhibition match with an abdominal injury.
The 2022 Wimbledon finalist returned to the tour last week in Brisbane, having played just one singles match since October 2022.
Announcing his retirement on Instagram, the 29-year-old said an ultrasound revealed a first-class strain.
He said he would “rest up and do everything I can to be good until the Aus Open” which starts on Sunday.
He lost his opening singles match in Brisbane, beaten by France's Giovanni Mpetshi Perricard in three tie-break sets, after which he said he “felt like I'd been hit by a bus” and reached the second round of the doubles, with Novak Djokovic . .
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Nick Kyrgios and Novak Djokovic participated in an exciting meeting at the Brisbane International against Nikola Mektic and Michael Venus.
“I think I almost need a miracle, and I need the stars to align for my wrist to last a grand slam, for sure,” he said after the singles loss.
“For my wrist, it's all new ground now. It's very painful…that's what we expected. Another building block on the way today.”
Australian Open tournament director Craig Tiley expected Kyrgios to play in Melbourne and felt the withdrawal was “precautionary”.