| Osaka, who was set play for the first time 
				since her Australian Open triumph, has suffered with back 
				problems in the past.
 "I am sorry to have withdraw from Doha this year as I was 
				looking forward to playing and seeing my fans there," the 
				21-year-old said in a statement.
 
 "I wish everyone a great week and hope to see everyone next 
				year."
 
 Simona Halep, the Romanian who Osaka replaced as world number 
				one, Karolina Pliskova and Angelique Kerber head up the field in 
				Doha from Feb. 11.
 
 (Reporting by Jack Tarrant, editing by Nick Mulvenney)
 
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