This is something that I haven't seen before, but I'm not surprised its something Bill James came up with.
CYP: In The Neyer/James Guide To Pitchers -- co-authored by Bill James and ESPN.com's Rob Neyer presents a method, based on past results, to predict Cy Young balloting. This page provides an in-season snapshot of the Cy Young "race," as figured by the following formula: Cy Young Points (CYP) = ((5*IP/9)-ER) + (SO/12) + (SV*2.5) + Shutouts + ((W*6)-(L*2)) + VB (see below).
Relievers have become less likely to win the Cy, but according to history Rodney has the 4th best chance while Johnson has the 8th. JJ is below Felix Hernandez and above Soriano and CC Sabathia. Just something kinda cool I thought to share.