Now Commenting On:

Rox call up top prospect Chacin in 'pen

Rox call up top prospect Chacin in 'pen

DENVER -- Top pitching prospect Jhoulys Chacin has been promoted from Double-A Tulsa and will join the Rockies' bullpen on Friday night to open a key three-game set with the Giants at Coors Field.

Chacin, 21, was informed of the decision on Wednesday night, when he was pulled after one inning of a start against Springfield. An opening arose at the Major League level when right-hander Manuel Corpas announced Wednesday that he will undergo surgery to remove bone chips from his throwing elbow.

This season, Chacin is 8-6 with a 3.14 ERA in 18 starts, with 86 strikeouts against 35 walks. In July, he is 1-0 with a 1.84 ERA in three starts, which includes the abbreviated start on Wednesday.

"He's has a tremendous upside," Rockies general manager Dan O'Dowd said. "We're not going to throw him immediately in a back-end role. We'll use him in more of a middle capacity. We'll see how he handles it. This is not an irreversible decision."

The Rockies also are believed to be close to a trade for more bullpen help.

Chacin, O'Dowd said, "took a big step" by pitching a solid inning in the XM All-Star Futures Game in St. Louis during All-Star weekend. The decision was made on the recommendation of assistant general manager Bill Geivett, player development director Marc Gustafson, and Minor League pitching coaches Bryan Harvey and Bo McLaughlin.

"We just feel he's more mature and more focused than some of the other guys we have," O'Dowd said

Thomas Harding is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.

Boys and Girls Club of America

©2014 MLBAM, LP. All rights reserved.

The following are trademarks or service marks of Major League Baseball entities and may be used only with permission of Major League Baseball Properties, Inc. or the relevant Major League Baseball entity: Major League, Major League Baseball, MLB, the silhouetted batter logo, World Series, National League, American League, Division Series, League Championship Series, All-Star Game, and the names, nicknames, logos, uniform designs, color combinations, and slogans designating the Major League Baseball clubs and entities, and their respective mascots, events and exhibitions. Use of the Website signifies your agreement to the Terms of Use and Privacy Policy (updated May 24, 2013).

View MLB.com in English | En Español