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Knuckleballer Gamboa suspended 50 games

BALTIMORE -- Triple-A knuckleballer Eddie Gamboa received a 50-game suspension without pay on Friday after testing positive for exogenous testosterone, a performance-enhancing substance in violation of the Minor League Drug Prevention and Treatment Program.

"There's a lot of sidebars to this stuff," said manager Buck Showalter. "Still is what it is, a violation of the policy set down by baseball. Obviously I know a lot more about [the suspension]. Gamby was on the radar here, so it's unfortunate."

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Gamboa, who was slated to pitch for Norfolk on Friday, will serve the suspension immediately. The O's also released knuckleballer Zach Clark, who -- like Gamboa -- converted to a knuckleball last season. Clark appeared in one game for the Orioles in 2013.

Gamboa, 29, is 4-5 with a 4.06 ERA in 14 games (12 starts) this season. He was second in the International League with 74 strikeouts in 77 2/3 innings.

Brittany Ghiroli is a reporter for MLB.com. Read her blog, Britt's Bird Watch, and follow her on Twitter @britt_ghiroli. This story was not subject to the approval of Major League Baseball or its clubs.

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