Jason Quigley's planned 13 February fight with Shane Mosley Jnr has been cancelled due to an unspecified illness, his publicist announced today.
Quigley will work with his teams at Golden Boy Promotions and Sheer Sports Management to arrange a new date.
"I’m disappointed that my fight has had to be called off," Quigley said.
"The plan is to get back into the ring in April.
"I’ll recover now and then continue on with what has been a brilliant training camp to date.
"This is only a minor delay to what will be a very memorable and busy year for me."
Quigley's career suffered a serious setback in 2019 after being retired against Tureano Johnson and had two comeback victories in the aftermath.