Major League Baseball has welcomed a challenge from Joseph Tacopina Alex Rodriguez's attorney to publicly divulge all of its information gathered in recent years to reveal that Rodriguez has been taking performance-enhancing drugs since 2010.

In a letter from MLB vice president Rob Manfred delivered to Tacopina Manfred informed the attorney he was in violation of baseball's Joint Drug Agreement's confidentiality clause but if he's now willing he will reveal all of its information on Rodriguez.

A copy of the letter was obtained by USA TODAY Sports.

"While we believe that your public comments are already in breach of the confidentiality provisions of Major League Baseball's Joint Drug Prevention and Treatment Program (the "Program")'' Manfred said in the letter "we will agree to waive those provisions as they apply to both Rodriguez and the Office of Commissioner of Baseball with respect to Rodriguez's entire history under the Program including but not limited to his testing history test results violations of the Program and all information and evidence relating to Rodriguez's treatment by Anthony Bosch Anthony Galea and Victor Conte.''

Tacopina issued a rebuttal noting that any such release would have to include the permission of baseball's players' association.