(CBS) The White Sox on Monday morning activated reliever Jake Petricka from the 15-day disabled list and officially called up prized prospect Carlos Rodon from Triple-A Charlotte.

Additionally, Chicago placed right-handed reliever Javy Guerra on the 15-day DL with right shoulder inflammation. The move is retroactive to April 13. The White Sox also designated right-hander Kyle Drabek for assignment.

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The return of Petricka is important, as he’s expected to be the right-handed setup man alongside lefty Zach Duke. Petricka, 26, had been on the DL with a right forearm strain. He had a 2.96 ERA in 73 innings in 2014.

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Rodon, 22, will initially pitch out of the bullpen, though his future is in the rotation. He was the third overall pick in the 2014 amateur draft, and he was 1-0 with a 3.60 ERA at Triple-A this season, including 13 strikeouts in two starts. He’ll wear No. 55.

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Guerra had thrown 1 2/3 scoreless innings in three appearances for Chicago this season. Drabek had a 5.06 ERA in 5 1/3 innings over three appearances this year after he was claimed off waivers from Toronto in late March.