Former US Open champion Emma Raducanu has pulled out of the Miami Open as she continues her recovery from illness, the WTA said on Monday.
British No 1 Raducanu, who enjoyed a run to the quarterfinals in Florida last year, had been given a bye into the second round.
The 23-year-old has struggled with form and fitness issues since her only Grand Slam triumph as a teenager at New York in 2021 and has worked with a string of different coaches with little success.
The Miami Open main draw begins on Tuesday and runs until 29 March.