Major League Baseball has suspended Rangers minor league righthander Danny Gutierrez for 50 games after he tested positive for an amphetamine in violation of MLB's minor league drug prevention and treatment program.

The Rangers' No. 9 prospect, Gutierrez was using adderall, according to BA correspondent Evan Grant of the Dallas Morning News. It's a drug used to treat Attention Deficit Disorder, and Gutierrez uses it with a prescription but did not get the necessary waiver from MLB.

"I sincerely apologize to the Texas Rangers organization, Major League Baseball, and to my family for my failure to comply with the Minor League Drug Policy by failing to apply for and obtain a TUE (Therapeutic Use Exemption)," Gutierrez said in a statement released by the Rangers. "I understand that it was my responsibility to obtain a TUE even though the drug was prescribed by a doctor, and that I have let down myself and many others with my failure to do so. I greatly appreciate the support of the Texas Rangers front office and I am determined to serve as a better role model in the future."

The Rangers acquired Gutierrez, signed in 2006 as a draft-and-follow out of Riverside (Calif.) CC, in a trade from the Royals. They had repeated issues with Gutierrez pertaining to his makeup. He was sent home from spring training once and had three run-ins with the law, including an assault charge in June 2009. The Royals traded him soon thereafter for catcher Manny Pina and outfielder Tim Smith. While this drug suspension appears to have a good explanation, it just adds to the long list of missteps Gutierrez, 22, has made as a professional.