By Tim Polzer
June 07, 2013

MLB reportedly will not have to rely solely on testimony from former Biogenesis founder Anthony Bosch. (Joe Raedle/Getty Images) MLB reportedly won't rely solely on testimony from Biogenesis clinic founder Anthony Bosch. (Joe Raedle/Getty Images)

Newsday reports Major League Baseball's investigation into players using illegal performance-enhancing drugs through the former Biogenesis clinic has accumulated testimony and evidence from many witnesses.

The report follows news that the anti-aging clinic's founder, Anthony Bosch, has agreed to cooperate and testify in MLB's probe. Bosch's reliability as a witness has been brought into question.

MCCANN: MLB's deal with Biogenesis director raises many questions

The report also says MLB won't rely on testing results and intends to significantly punish players for lying to investigators.

From Newsday:

According to the source, interviews with "tons" of people will help frame the basis of MLB's investigation. [Alex] Rodriguez is among those scheduled to be interviewed by MLB as part of the next phase of the investigation.

What the players say to MLB investigators could determine what, if any, discipline they may face.

According to the source, if players are found to have lied to investigators, that could result in a more significant penalty.

It appears that much of MLB's case will rest on what is called a non-analytical positive, meaning evidence other than a blood or urine test to detect banned substances.

The source said that while a positive test would be beneficial to investigators, the lack of a test would not necessarily clear a player.

Major league players including Rodriguez, 2011 National League MVP Ryan Braun, Melky Cabrera and Nelson Cruz, were linked to Biogenesis via records according a Miami New Times report in January.

Rodriguez said Thursday he plans "to monitor" MLB's Biogenesis investigation.

MLB lawyers issued subpoenas

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