You're framing this in an interesting way, but only interesting to me since I think all previously interested parties have long since wandered on. I have always spoken in terms of value added per dollar spent. If I had spoken of gross value then I wouldn't have stipulated Sano as trade bait in the first place, obviously. See "Trade Sano" Post# 1. As a stipulation, if the Twin retain Liriano, then they are virtually encumbered therewith to sign a free agent as per their de facto all-in posturing for 2013. Owing to the fact that (presumable SP free agents you mentioned) are all or 1 of: 1. old and declining and 2. overpriced relative to Price/Hernandez (and to a lesser extent, Buehrle and Lee), 3. unproven in the AL, 4. injurious history, then a better move may be to take the better, younger pitcher under 2+ years of control at the lower immediate price of a A level prospect (albeit a top level prospect). You, sir, retorted by cherry picking statistics from 2008, all of which are validated by fangraphs WAR, and none of which are validated by rWAR (bb-ref), thus I assumed bb-ref. But I am done quibbling. The fact is, if we can't even agree on a common formula for Wins then there is little to quibble about anyway. BB-ref and Fangraphs tell very different strories about Liriano. I assume you are familiar with both, and can understand my conclusion here. If not, then please reference fangraphs.com and search for WAR. Pitcher WAR is more heavily dependent on FIP and less dependent on park factor (obviously park factor is less meaningful in a park that is not even 3 years old).