Melky Cabrera just delivered a huge jolt to the dog days of August with the shocking news that he's being suspended for 50 games after testing positive for testosterone. Major League Baseball announced the punishment for the reigning All-Star MVP on Wednesday afternoon and it is effective immediately. The Giants, tied with the Los Angeles Dodgers atop the NL West, only have 45 games left in the regular season. That would make Cabrera eligible to return in the sixth game of any combination of tiebreakers, wild card games and playoff contests, though he wouldn't have the benefit of working his way back "My positive test was the result of my use of a substance I should not have used," Cabrera said in a statement. "I am deeply sorry for my mistake." Cabrera had been experiencing a great contract year with the Giants after an offseason trade from Kansas City. He currently leads the league with 159 hits and holds a .346/.390/.516 line with 11 homers and 60 RBI for San Francisco. Want more baseball all season long? Follow @bigleaguestew , @KevinKaduk and the BLS Facebook page !