Former Cy Young Award winner Bartolo Colon of the Oakland Athletics was suspended for 50 games Wednesday after testing positive for testosterone.

Major League Baseball made the announcement one week after All-Star game MVP Melky Cabrera of the San Francisco Giants was suspended 50 games for a positive test for the same substance.

"I apologize to the fans, to my teammates and to the Oakland A's," Colon said in a statement released by the players' association. "I accept responsibility for my actions and I will serve my suspension as required by the joint drug program."

He will miss the final 40 games of the regular season and the first 10 games of the postseason if Oakland advances that far. Any remainder of the suspension would be served in a future season, if Colon signs another major league contract.

"It's a shock," Oakland reliever Grant Balfour said. "He's a guy that we're definitely relying on right now. I guess you could say it's bad timing any time, but especially now."

Oakland, which hasn't made the playoffs since 2006, began Wednesday a half-game out in the AL wild-card race. The A's were preparing for an afternoon series finale with the Minnesota Twins at the Coliseum when they got the news from the clubhouse TVs. A closed-door team meeting was quickly called.

"The Oakland Athletics are disappointed to learn of today's suspension," the team said in a statement.

The 39-year-old Colon is 10-9 with a 3.43 ERA in 24 starts this season, his first with the A's, and has a 171-122 record in 15 big league seasons. He was due to start today in Tampa. A two-time All-Star, he won the 2005 AL Cy Young Award after going 21-8 for the Los Angeles Angels.

- Associated Press