The Oakland Athletics Major League Baseball pitcher Bartolo Colon has been suspended 50 games without pay after testing positive for testosterone.
The suspension of Colon, who leads Oakland pitchers with 10 wins this season, is effective immediately.
A native of the Dominican Republic, Colon was hit with the ban for violating MLB's drug prevention and treatment programme.
The 39-year-old, an All-Star with the Cleveland Indians in 1998 and the Los Angeles Angels in 2005, is the second player to be suspended by MLB over a positive dope test in a week.
San Francisco Giants' All-Star outfielder Melky Cabrera was also banned for 50 games without pay last Thursday after testing positive for testosterone.
