At Round Rock, Rowen went 1-0 with two saves and a 2.75 ERA. He's made 16 relief appearances and was the Rangers' 2012 Minor League Reliever of the Year.
Rangers manager Ron Washington said he didn't get a chance to see Rowen throw this spring due to injury, but did see him throw last year and knows what he's done this season at Round Rock.
"He's been throwing well," Washington said. "I don't think he's given up very much down there, so I'm looking forward to seeing him."
Grace Raynor is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.