San Francisco Giants pitcher José Domínguez was suspended for the third time in his history as an athlete for violating the Minor League Drug Prevention program.

The commissioner's office announced, the 26-year-old tested positive for the use of stanozolol, a synthetic anabolic steroid derived from dihydrotestosterone, which is an endogenous androgen sex steroid and hormone.

The drug has been used in both animal and human patients to treat anemia and hereditary angioedema, to improve muscle growth, red blood cell production, increase bone density and stimulate the appetite.

In 2009, the player from San Pedro de Macoris, Dominican Republic, received a 50-game suspension while playing in the Dominican summer league after testing positive for the same drug. In November 2012 when he played in Double A, he received another 25-game suspension, but this time the infringement was unspecified.

After serving the suspension at the start of the 2013 season, he rejoined Chattanooga, where he had a 2.60 ERA in 14 games with 28 strikeouts. Is good to remember Dominguez was signed by the  Los Angeles Dodgers  for $50,000 when he was 16-year-old in 2007 . In 5 games with the Dodgers, he allowed 8 runs in 6.1 innings for an 11.37 ERA. During the season of 2004, he was not called up in September because he was dealing with an arm injury he suffered in the minor leagues.

So far this year, 24 players have been suspended under the anti-doping minor league program.