Heavyweight boxer Jarrell ‘Big Baby’ Miller, has tested positive for the banned substance GW1516.

Miller is due to fight Anthony Joshua at Madison Square Garden in New York, on June 1st, in what is set to be Joshua’s debut on American soil.

BREAKING: Heavyweight contender Jarrell “Big Baby” Miller has tested positive for the banned substance GW1516 ahead his scheduled challenge of unified world titleholder Anthony Joshua, three sources with knowledge of the results told ESPN on Tuesday… https://t.co/do1KFMVV8u

— Dan Rafael (@danrafaelespn) April 17, 2019

Joshua holds the WBA (Super), IBF, WBO, and IBO heavyweight titles.

ESPN have reported that three sources have informed them on Tuesday night that Miller failed a Voluntary Anti Doping Association (VADA) test on March 20th.

Since reporting this story, Anthony Joshua and Jarrell Miller’s promoter’s Eddie Hearn and Dmitry Salita have taken to Twitter to comment on the news.

We have been informed by VADA that there has been an adverse finding in Jarrell Miller’s sample collected on March 20th, 2019. We are working with all relevant parties and will update with more details soon. AJ’s preparation continues for June 1st at MSG.

— Eddie Hearn (@EddieHearn) April 17, 2019

We are in the process of obtaining further information about VADA’s finding and will have more to say soon on this developing situation. In the meantime Jarrell continues to train for his June 1 fight against Anthony Joshua.

— Salita Promotions (@SalitaProm) April 17, 2019

Update:

The LA Times has since reported that the New York State Athletic Commission (NYSAC) has declined heavyweight Miller’s application for his license to fight Anthony Joshua.

Joshua’s promoter Hearn, now has the task of finding his man a new opponent for June 1st. Hearn has told media there were initially two options for Anthony Joshua’s June 1st opponent. Miller and Luis Ortiz. Ortiz still doesn’t have a fight booked, so is a likely replacement.