Report: Jarrell Miller tests positive for performance-enhancing drugs ahead of Anthony Joshua fight

Heavyweight contender Jarrell "Big Baby" Miller has tested positive for the banned performance-enhancing substance GW1516 (Endurobol) ahead of his scheduled world title unification fight with Anthony Joshua on June 1 at Madison Square Garden, according to two sources reporting to

ESPN's Dan Rafael was first to report the story.

The test results, which were made public on Tuesday, were a result of a random urine test conducted by the Voluntary Anti-Doping Association (VADA) on March 20.

Ironically, Miller (23-0-1, 20 KOs), 30, accused Joshua of using performance-enhancing drugs during the press tour for the bout.

“There’s no way you’re going to put on 20lbs of muscle within a year without taking some kind of supplement. It’s impossible," Miller said of Joshua in February. "I know bodybuilders train all year round, non-stop, and don’t put on that amount of muscle.

“Now, if you look at his stature, while he’s staying at this higher level, his physique has kinda shrunk."

Critics have also questioned how a 317-pound has kept up such a rigorous pace. Now, Miller has a lot of questions that he must answer.

This is also not the first time that Miller has failed a drug test. When he competed as a kickboxer under the GLORY banner, he was suspended for nine months by the California State Athletic Commission after testing positive for Dimethylamylamine, which has been used in the past by athletes as a dietary supplement and a performance-enhancer. Miller was subsequently suspended for nine months.

Joshua (22-0, 21 KO's) is a superstar in his native United Kingdom and regularly draws sold-out crowds, including a British-record 90,000 at Wembley Stadium in London for his electrifying 11th-round knockout of all-time great Wladimir Klitschko in the 2017 fight of the year. Joshua has made three consecutive defenses. In his most recent triumph, he scored a seventh-round knockout of former contender Alexander Povetkin.

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