National League MVP Ryan Braun's 50-game suspension was overturned Thursday by baseball arbitrator Shyam Das, the first time a baseball player successfully challenged a drug-related penalty in a grievance.

The decision was announced Thursday by the Major League Baseball Players Association, one day before the 28-year-old outfielder was due to report to spring training with the Milwaukee Brewers.

Braun tested positive in October for elevated testosterone, and ESPN revealed the positive test in December.

No reasoning was given for Thursday's decision.

"Today the arbitration panel announced its decision, by a 2-1 vote, to sustain Ryan Braun's grievance challenging his 50-game suspension by the commissioner's office," a statement from the players' association said.

MLB executive vice president Rob Manfred and union head Michael Weiner are part of the arbitration panel, and management and the union almost always split their votes, leaving Das, the independent panel member, to make the decision.

Manfred said management disagreed with the decision by Das. It is the first time a drug suspension has been overturned in a grievance, baseball officials said.

(Copyright 2012 by The Associated Press.  All Rights Reserved.)

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