Anthony Bosch, founder of the controversial Biogenesis clinic in South Florida, has agreed to assist MLB’s ongoing investigation into the banned-substance pipeline in the region, report T.J. Quinn, Pedro Gomez and Mike Fish of ESPN’s Outside the Lines.

Bosch’s cooperation, confirmed by’s Jon Heyman, will greatly aid MLB’s efforts to suspend, among others, Ryan Braun of the Brewers and Alex Rodriguez of the Yankees.

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On April 15 of this year, Heyman reported that MLB was pleased with the progress of the investigation, and MLB, of course, has long had designs on disciplining the players involved.

Heyman also classifies Bosch’s cooperation as a “major break in the case.”

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However, any kind of endgame could still be weeks away. It’s believed that MLB has not at this time received any testimony from Bosch, only the agreement to provide testimony.

Heyman also adds that it’s not known whether Bosch has yet confirmed any names linked to Biogenesis.

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