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Atlanta optioned Petersen to Triple-A Gwinnett on Tuesday.

Petersen's stay with the big club lasted all of one day, with the right-hander not getting called upon in relief in Monday's 7-6 win over the Cardinals. He'll cede his spot on the 26-man active roster to right-hander Nathan Wiles, who was called up from Triple-A and is expected to work in bulk relief during Tuesday's game.

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