Daily Prospect Profile: Zack Von Rosenberg

Von Rosenberg has put up two strong outings in a row.

One of the bigger disappointments in the minors this year has been Zack Von Rosenberg, and his struggles in his first year in full season ball.  Von Rosenberg is way too young to assume his poor numbers represent anything more than growing pains.  However, the 6′ 5″, 205 pound right hander has definitely experienced his share of struggles this year, with a 6.65 ERA in 89.1 innings, fueled mostly by 17 home runs.

I’ve seen Von Rosenberg twice this year.  Once was in Spring Training for a few innings.  He was leaving the ball up in the zone a bit, and getting hit pretty hard at times, although it was against an upper level Yankees farm team.  The second time was at the start of the month in West Virginia.  I stuck around for an extra day to see Von Rosenberg, and didn’t get much of a chance to watch him, as he was bounced after getting two outs, giving up seven runs, five earned, in the outing.  After the game I spoke with Von Rosenberg, and West Virginia manager Gary Robinson, who both noted that the problems weren’t physical, but issues with Von Rosenberg’s approach:

“Instead of placing the pitch, let’s drive the pitch,” Robinson said.  ”Let’s throw the pitch with some heart in it, with some guts in it.  And he shows signs.  He just hasn’t been able to put it together yet.  It may take another 4-5 starts for him.  His issues are not physical.  His delivery is pretty clean, everything is good.  It’s more of a change in mentality.  Lots of times, that’s tougher than any delivery issue you try to fix.  I’m confident that he will be able to get that done.”

“It’s delivery, it’s mentality, it’s a lot of things that are hand in hand that I’m trying to…I need to apply in the game, but I’m just not doing it right now,” Von Rosenberg said.

It’s been five starts since that outing.  In his last two starts, Von Rosenberg has combined for 11 shutout innings, allowing five hits, no walks, and striking out nine.  It’s far too early to suggest that those two outings represent a change.  In two mid-June outings, Von Rosenberg combined to allow two earned runs in 10.2 innings, with a 10:1 K/BB ratio.  He followed that up by allowing 12 earned runs in 5.2 innings in his next two starts.  He’s still a young pitcher, and at this point is more about projectability than his current makeup and results.  That said, putting up good results for the remainder of the year would be an encouraging sign, and might help boost Von Rosenberg’s confidence, so that he can continue to drive his pitches to their destination, rather than placing them there.

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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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  • Anonymous

    I have seen ZVR several times this year and he is lacking confidence on the mound. That is basically all there is to it. Good clean mechanics and plenty of room to add velo, but needs to have some success. Glad to see his last two outings have been better.

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