Drafted in the 22nd round (676th overall) by the Texas Rangers in 2010.
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Rowen's pure stuff might be the worst in the Prospect Handbook, but because of his submarine delivery, the raw stuff doesn't need to be there for him to make hitters top the ball into the ground. A reliever his entire minor league career, he has had success at every level, including at Triple-A Round Rock in 2013, because of his ability to throw strikes and get quick groundball outs. Rowen throws only in the low 80s, but the angle and sink he delivers the ball with make him one of the most extreme groundball machines in baseball. In fact, just five qualified minor league relievers bettered his 3.4 groundout/airout ratio in 2013. Rowen throws a frisbee breaking ball in the low 70s that grades out below-average, though with his delivery it's effective enough for him to give hitters a second look when needed. In November, the Rangers added Rowen to the 40-man roster to shield him from the Rule 5 draft. While his ceiling and future role are limited, he could very well carve out a career along the lines of former Ranger Darren O'Day or Brad Ziegler, with a chance to crack the big league bullpen in 2014.
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