Right-handed pitcher Jonathan Gray, a 100-mph-throwing University of Oklahoma ace who's widely considered one of the top three draft-eligible amateur players in the country, tested positive for the stimulant Adderall, major-league team sources said.
Test results are sent to the 30 teams, so all are aware of the result. Sources said Gray did not have a prescription.
There is no penalty for a failed test for a draft-eligible player such as Gray. Major leaguers receive a 25-game ban for a second failure for a stimulant, though not a first one. According to an ESPN.com report citing league sources, Gray might be subjected to follow-up testing when his professional career begins.
Gray, a junior at OU, is believed to be the only one of 200 draft-eligible players to have tested positive for any drug. The top 200 players are tested by MLB to provide information for teams before Thursday's first day of the amateur draft.
A phone message left for his agent wasn't immediately returned.
Major leaguers with certain conditions can apply for a therapeutic-use exemption (T.U.E.) that excuses them from being tested for specific drugs. It is estimated that about 100 players have a T.U.E., many of which allow stimulants to combat various conditions, including ADD.
There is no indication that a failure for a stimulant might affect a prospect's draft attractiveness or negotiating leverage. Gray is considered by most to be among the top three players, along with Stanford right-hander Mark Appel and University of San Diego slugging third baseman Kris Bryant.
"I don't think it's that big a deal," one GM said. "The kid may have [a condition]."
Gray was originally picked by the Yankees out of junior college but turned down a bonus offer believed to be about $500,000. He is widely expected to get at least 10 times that after showing vast improvement as a Sooner. He has been clocked many times at 100 mph, and scouts marvel how he can carry that velocity late into games.