"I am truly shocked by what has happened and I am lament this has caused people to have doubts about my integrity. I have always been a clean fighter," Alvarez said in a prepared statement.
Canelo Alvarez-Gennady Golovkin May 5 fight off →
Alvarez has no history of failing drug tests and he said he will submit to any and all further testing necessary to ensure that the Cinco de Mayo fight, set for Las Vegas, will go forward as scheduled.
Canelo Alvarez tests positive for performance-enhancing drug ahead of Gennady Golovkin fight →