June 7 (UPI) -- World No. 2 Naomi Osaka put her status in doubt for Wimbledon when she pulled out of next week's Berlin WTA 500 event, tournament organizers announced Monday.
The bett1 Open starts June 14 and ends June 20 in Berlin. The event is the first of four grass-court tournaments that top tennis players will use to prepare for Wimbledon, the third Grand Slam of the season.
"We have received notification Naomi Osaka cannot start in Berlin," a spokesman for the event said in a statement.
"After consulting her management, she will take a break."
Wimbledon 2021 is from June 28 to July 10 at the All England Club. Last week, Osaka withdrew from the French Open to address her mental health.
She claimed the first women's singles Grand Slam title this year with a win over American Jennifer Brady in the 2021 Australian Open final Feb. 20 in Melbourne.
Osaka, 23, reached the third round in 2017 and 2018 at Wimbledon. Kazakhstan's Yulia Putintseva upset Osaka in the first round in 2019 in London. Wimbledon 2020 was canceled due to the coronavirus pandemic.
The U.S. Open is the final Grand Slam tournament this year. The hard-court tournament is from Aug. 30 to Sept. 13 at the Billie Jean King National Tennis Center in Queens. Osaka won the U.S. Open in 2018 and 2020.