Nick Kyrgios has withdrawn from next month's Indian Wells Open as he continues to recover from knee surgery.
The 2022 Wimbledon runner-up has not been in action this season, having been forced to pull out of the Australian Open in January due to a small lateral meniscus tear.
Kyrgios underwent surgery soon after and was targeting the opening Masters 1000 event of the season at Indian Wells for his first tournament back.
However, event organisers confirmed on Monday the 27-year-old is still not ready to return.
"Nick Kyrgios has withdrawn from the 2023 BNP Paribas Open due to an ongoing knee injury," a statement read.
Indian Wells gets under way on March 6 and is followed by the Miami Open at the end of the month.
Kyrgios' last competitive singles match came in October at the Japan Open, which he withdrew from ahead of the quarter-finals.
The Australian, a two-time quarter-finalist on the hard courts at Indian Wells, has slipped down to 19th in the ATP Rankings.