The Office of the Commissioner of Baseball announced Wednesday that San Diego Padres outfielder Cameron Maybin has received a 25-game suspension without pay after testing positive for an Amphetamine in violation of Major League Baseball’s Joint Drug Prevention and Treatment Program.

The suspension of Maybin is effective immediately.

The Braves have suspended second baseman Dan Uggla for one game, according to an ESPN.com report.

The team announced the suspension on its Twitter feed on Sunday morning, with no further explanation. Manager Fredi Gonzalez declined comment before Atlanta's game at the Cubs, calling it an "internal matter."

Joel Pineiro has received a 50-game suspension after testing positive for a banned stimulant in violation of the minor league drug prevention and treatment program.

Pineiro tested positive for the stimulant heptaminol.

"I have never taken a performance-enhancing drug, but I take full responsibility for what has happened," Pineiro said in a statement. "The positive test was a result of taking a commercially available supplement to aid in recovering from the shoulder injury and subsequent surgery that caused me to miss most of the 2012 and 2013 seasons. I took this supplement for the first time shortly before the start of the 2014 season, and now realize that supplement contained a trace amount of a banned stimulant.

"I made a terrible mistake by not carefully checking the ingredients of the supplement and offer my sincere apology to everyone I let down -- the league, my teammates, fans, and especially my family. Although I did so unintentionally, I accept that I violated the league's rules and will not appeal the suspension. Over the next several months, I am going to do everything I can to earn the trust of this league and get back to the game I love. I look forward to pitching again in 2015."