#1 Tyler Thornburg (P)
Thornburg, 24, has steadily moved through the system since being selected in the third round of the 2010 amateur draft out of Charleston Southern University. He made 13 starts in double-A and then another eight in triple-A in 2012. He also made his MLB debut with eight appearances (three starts) but an ideal situation would allow the right-hander to return to triple-A to open 2013. With the big league rotation as thin as it is, though, Thornburg has a decent shot at opening the year in the starting rotation.
At 6’6” 210 lbs, the Texas native is built like an innings-eater. Although he looks like a fire-baller, Jungmann struck out just 99 batters in 2012 and was a pitch-to-contact guy. He induced twice as many ground balls as fly balls. Jungmann has a solid fastball that can touch 94 mph. He also shows a promising curveball but is still working on developing his changeup, which will help him against left-handed hitters (splits: .309 vs LHH, .224 vs RHH). He has shown above-average control but is still working on his command.
I spoke to a talent evaluator familiar with Jungmann and he stated, “Taylor is a different breed. Last summer he was working on one thing… He was working on his breaking ball most of the year, not worried about consequences or numbers… and if you look at his K-rate the last month that’s where you’ll see his strikeouts as it became more effective… because he started to get a better feel with that pitch.”
The depth in the big league rotation is far from impressive and there aren’t many arms ahead of Jungmann in the minor league system. He’ll move up to double-A to open 2013 and will be a welcomed addition at the major league level as soon as he’s ready. His ceiling appears to be that of a mid-rotation workhorse.
As mentioned, Peralta is ready to assume a role in the big league starting rotation. He held his own at the big league level in five late-season starts and will open 2013 looking to pick up where he left off. After seven seasons in the minors, the Brewers are ready to reap the rewards from the Dominican native’s lengthy development. If he continues to maintain his higher velocity and continues to sharpen his secondary stuff, Peralta could be an impact arm.
The rest of the list... http://www.fangraphs.com/blogs/index.php/milwaukee-brewers-top-15-prospects-2012-13/