Just days before the postseason began, federal authorities called Major League Baseball officials to tell them that they were investigating shipments of human growth hormone that were sent to Guillenís wife in the Bay Area, according to the lawyers.
The lawyers spoke on the condition of anonymity because they did not want to be identified discussing an ongoing federal investigation. The commissionerís office opened an investigation of its own and told the Giants that they should consider leaving Guillen off the postseason roster. The Giants did just that.
A spokesman for M.L.B. declined comment.
This is not the first time that Guillen, 34, has been tied to performance-enhancing drugs. In 2007, The San Francisco Chronicle reported that between May 2002 and June 2005 Guillen bought more than $19,000 worth of H.G.H. and other drugs from the Palm Beach Rejuvenation Center