2011 Top Pirates Prospects: #9 – Zack Von Rosenberg

The Pirates Prospects 2011 Prospect Guide was released last week, featuring 237 prospect reports, interviews with Jameson Taillon, Stetson Allie, Zack Von Rosenberg, and Zack Dodson, the 2011 top 50 prospects, and the most comprehensive coverage of the Pirates’ farm system that you can find. While the top 50 prospects are exclusive to the book, the top ten prospects will be released on the site. Be sure to purchase your copy of the book by clicking “Buy Now” at the bottom of this page (or to the right).

To recap the countdown so far:

10. Colton Cain

We continue the countdown with the number nine prospect, Zack Von Rosenberg.

9. Zack Von Rosenberg, RHP

Von Rosenberg has a very projectable frame, and could be one of the Pirates' top pitching prospects if he adds velocity as he gets older.

Von Rosenberg was the cream of the crop from the 2009 prep class. The Pirates signed him away from a strong commitment to LSU, giving him $1.2 M, which is the biggest bonus the Pirates have ever given out after the third round. Zack signed late in the 2009 season, and only made one appearance, on the final day of the GCL season.

He jumped to State College in 2010, where he stayed in short season ball the entire season. The results were strong, considering he was mostly throwing his fastball and working on commanding the pitch. He started slow, with a 7.50 ERA in his first three starts, but posted a 2.11 ERA in his final nine starts. He struck out 36 in 47 innings over his final nine starts, including nine batters in eight innings in his final two starts of the year. His low walk rate was also encouraging, displaying his control and command of his fastball.

Von Rosenberg throws an 88-91 MPH fastball, although he has a very projectable frame, and is a strong candidate to add velocity as he matures and fills out that frame. He throws a good curveball, and gets good deception with his changeup. If he eventually adds velocity, he could become a top of the rotation starting prospect with three potentially above-average pitches. He should jump to full season ball in West Virginia in 2011, and could make it to Bradenton by the end of the season. Because he’s a highly projectable pitcher, it’s hard to predict what he could become in the future. A lot will depend on whether he can add velocity to his fastball, although the 2011 season should give us a better feel for how he projects if he doesn’t add that velocity.

Tim Williams

Author: Tim Williams

Tim is the owner and editor in chief of Pirates Prospects. He started the site in January 2009, and turned it into his full time job during the 2011 season. Prior to starting Pirates Prospects, Tim worked with AccuScore.com, providing MLB, NHL, and NFL coverage to various national media outlets, including ESPN Insider, USA Today, Yahoo Sports, and the Wall Street Journal. He also writes the annual Prospect Guide, which is sold through the site. Tim lives in Bradenton, where he provides live coverage all year of Spring Training, mini camp, instructs, the Bradenton Marauders, and the GCL Pirates.

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