MilWAUkee Brewers Top 20 Prospects

We're staying in the AL East to check up on the Milwaukee Brewers prospects.  The list with individual grades and system commentary is after the jump:
 
Milwaukee Brewers Top 20 Prospects
Grade: A-
1.) Nick Franklin, SS, SEA

Grade: B+
2.) Dellin Betances, RHP, NYY

Grade: B
3.) Tyler Skaggs, LHP, ARI
4.) Alex Wimmers, RHP, MIN
5.) Fernando Martinez, OF, NYM

Grade: B-
6.) Scooter Gennett, 2B, MIL
7.) Matthew Hobgood, RHP, BAL
8.) Amaury Rivas, RHP, MIN

Grade: C+
9.) Junichi Tazawa, RHP, BOS
10.) Justin Turner, 2B, NYM
11.) Jason Hagerty, C, SD
12.) Robinson Chirinos, C, TB
13.) Cesar Puello, OF, NYM
14.) Ryan Wheeler, OF, ARI
15.) Jose Ramirez, RHP, NYY

Grade: C
16.) Lance Lynn, RHP, STL
17.) Jeurys Familia, RHP, NYM
18.) Brandon Crawford, SS, SF
19.) Sabastian Valle, C, PHI
20.) Corey Brown, OF, OAK

System Commentary:
It seems like the Brewers have an average system here, with a good balance of impact and depth.  I like the top of the system quite a bit, as I was high on Franklin and Skaggs before the 2010 season began.  I'm not sure I'm as high as most on Wimmers.  One thing I want to point out is the system's mid-range prospects, which includes a bunch of MLB-ready talent (FMart, Rivas, Tazawa, Turner, Chirinos).  Those five should at least be able to hold down backup roles for the foreseeable future, and I haven't lost all faith in Martinez yet.  The back-end of the system is interesting, as there are a few guys in Familia/Crawford/Valle that could jump up to higher grades in the next couple of years.