Major League Baseball investigators believe New York Yankees star Alex Rodriguez bought medical records from a clinic which allegedly supplied him with performance-enhancing drugs, US media reported on Friday.

The New York Times said MLB officials probing the activities of the now-closed Biogenesis anti-aging centre in Florida suspect Rodriguez bought documents from a former clinic employee in order to destroy them.

A spokesman for Rodriguez flatly denied the accusation of the Yankees superstar's involvement, the New York Times reported.

The Times had reported on Thursday that MLB investigators had purchased information from a former Biogenesis worker in an effort to uncover evidence linking the clinic to a performance-enhancing drugs racket.

In January, the Miami New Times newspaper reported that Rodriguez and several MLB stars had been supplied with performance enhancers by the clinic.

Rodriguez, who in 2009 admitted taking performance-enhancing substances while with the Texas Rangers from 2001-2003, also said he had never taken such drugs since then or with the Yankees, but his name appears 16 times in Biogenesis records from 2009 through 2012.

Rodriguez strongly denied any link to the clinic or its owner Anthony Bosch, who had reportedly recorded several transactions involving the Yankees star in hand-written notebooks.

"The news reports about a purported relationship between Alex Rodriguez and Anthony Bosch are not true," a spokesman for Rodriguez said.

"Alex Rodriguez was not Mr. Bosch's patient, he was never treated by him and he was never advised by him. The purported documents referenced in the story -- at least as they relate to Alex Rodriguez - are not legitimate."

Rodriguez, 37, is currently recovering from off-season hip surgery.

Source: AFP