A review of Peacock's season so far by Fangraphs in their midseason review of their preseason top 100 prospects.
http://www.fangraphs.com/blogs/index.php/reviewing-the-top-100-prospect-list-100-76/76. Brad Peacock, RHP, Oakland: Peacock joined Derek Norris in the off-season Gio Gonzalez deal that sent the prospects from Washington to Oakland. He’s struggled to adapt to a new organization but has had some very bad luck with a LOB% of just 55.3% and a BABIP of .390. His ERA sits at 7.00 but his FIP is just 3.68 at triple-A. (Value Down)