Cabrera tests positive, out for 50 games

The San Francisco Giants' postseason ambitions suffered a jolt on Wednesday when All-Star outfielder Melky Cabrera was suspended for 50 games for failing a doping test.

The 28-year-old from the Dominican Republic, the Most Valuable Player in this year's All-Star Game, had tested positive for testosterone and admitted to using a substance banned by MLB's drug prevention program.

"My positive test was the result of my use of a substance I should not have used," Cabrera, who will become a free agent after this season, said in a statement.