The Blue Jays signed both Jairo Labourt and del Rosario out of the Dominican Republic on March 7, 2011. Del Rosario fetched only $70,000--one-fifth of Labourt's bonus--because his fastball resided in the mid-80s at the time. Toronto believed there was more there because he could spin a curveball in the mid-70s, and he since has boosted his fastball to 88-90 mph with a high of 92. A throwing program has helped him add arm strength, and there might be a little more to come. He doesn't have as much velocity as Labourt, but del Rosario shows better feel for pitching and ate up inexperienced Gulf Coast League hitters in his U.S. debut. His best secondary pitch is a changeup that he commands well, while his curve has room for improvement. Del Rosario currently projects to fit in the back of a big league rotation, but he could find a higher ceiling if he adds velocity and develops plus command. He'll advance to Bluefield or Vancouver this season.
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