Major League Baseball suspended two players for 15 days on Thursday over violations of the league's drug policies.

Baseball commissioner Bud Selig announced the suspension of Jay Gibbons who plays for the Baltimore Orioles and Jose Guillen of the Seattle Mariners. They will begin their suspension at the start of the next baseball season in April of 2008.

Gibbons allegedly received six shipments of human growth hormone and two shipments of steroids between 2003 and July 2005, according to in a September report.

Guillen allegedly ordered human growth hormone and steroids between May 2002 and June 2005, according to a San Francisco Chronicle report last month.

The office of the baseball commissioner also announced insufficient evidence of violations in investigations of players Scott Schoeneweis of the Mets, Gary Matthews, Jr. of the Los Angeles Angels, Troy Glaus of the Toronto Blue Jays and Rick Ankiel of the St. Louis Cardinals.