Adrian Nieto on Biogenesis docs

Updated: December 12, 2013, 10:16 PM ET
By Mike Fish | ESPN.com

The name of Adrian Nieto, a 24-year-old catcher selected by the Chicago White Sox from the Washington Nationals roster in Thursday's Rule 5 draft, appears on documents from the South Florida clinic at the center of the Major League Baseball performance-enhancing drugs scandal.

[+] EnlargeAdrian Nieto
Mark J. Rebilas/USA TODAY SportsAdrian Nieto, whose name appears on the Biogenesis documents, was selected by the Chicago White Sox from the Washington Nationals roster in Thursday's Rule 5 draft.

The documents, obtained by "Outside the Lines," also include South Florida-based entertainers and celebrities who may have been clients of Tony Bosch, the Biogenesis clinic founder who is alleged to have supplied performance-enhancing drugs to Alex Rodriguez and at least a dozen other professional baseball players.

Nieto, a Hialeah, Fla., resident and a well-regarded prospect who has yet to play in the majors, is referenced twice in clinic documents. In both instances, he is identified as connected to "baseball" or "sports performance," and regimens prescribed by Bosch list banned substances such as human growth hormone, testosterone and the oral anabolic steroid Anavar -- abbreviated on a clinic computer spreadsheet.

The records list separate fees of $500 and $1,500, but there is no verification that Nieto was ever seen by Bosch, received the substances or made payments. Nor is there a date associated with Nieto in clinic records.

Nieto was suspended at the start of the 2011 season, serving a 50-game suspension for violating the minor league drug prevention and treatment program when he tested positive for an oral anabolic steroid. He denied any involvement with the clinic or Bosch when reached by "Outside the Lines."

"I don't know who Tony Bosch is," he said. Nieto later added that perhaps his father had visited the clinic for treatment of a skin condition.

A source said MLB was aware of Nieto's name in the Biogenesis documents and determined that the notations were during the timeframe of his prior failed test, for which he already had been punished.

That's the same scenario, the source said, that occurred with veteran catcher Ronny Paulino, whose name also appears in the documents "Outside the Lines" obtained. Paulino, who signed to a minor league contract last month with the Detroit Tigers, was suspended late in the 2010 season for violating the drug policy.

The source said MLB investigators also looked at Pittsburgh Pirates first baseman and former University of Miami player Gaby Sanchez and Edwin Encarnacion. Sanchez's full name appears in the documents, while only Encarnacion's last name appears. According to records, Bosch wrote down a 2011 appointment date for Sanchez -- Oct. 6 at 7 p.m. -- to meet him, and earned $3,000 a month from him. Sanchez could not be reached for comment.

Records indicate a scheduled appointment for "Encarnacion" at 5 p.m. Sept. 30, 2011, and projected monthly revenue of $4,000. Paul Kinzer, who represents the Toronto Blue Jays' Edwin Encarnacion, said the player has not been interviewed by investigators or implicated in the Biogenesis scandal. He said Encarnacion insists that he doesn't know Bosch, adding, "He told me he wouldn't know him if he walked in the room."

The source said MLB did not pursue cases against Sanchez and Encarnacion after talking with Bosch, who told investigators neither were clients.

Also listed in clinic records are prominent South Florida entertainers and business-types, with perhaps the best-known former athlete being ex-University of Miami and NFL quarterback Bernie Kosar. At least six references to Kosar are found in records, dating from January 2011 to March 2012. Among the substances his name is identified with are anabolic steroids and testosterone.

According to records, Kosar, 50, was referred by a local obstetrician/gynecologist. There is also a Jan. 6, 2011, notation related to Kosar, saying: "make appt. next week regarding business opp."

Kosar, like All-Star third baseman Rodriguez, serves on the University of Miami board of trustees. He did not respond to multiple messages left through family members and his attorney for this story.

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