Experience at AAA is overrated, all rookies will have to prove and verify at the MLB level anyway. It is also very true that delaying Hicks does "extend team control" and that there is financial gain--for the Twins (not we fans!). However, my slant is to have Mastroianni be the starting CF in hopes that he can produce a rather successful season--OBP, steals, runs scored, and defense--so he could be traded for the largesse received from the Span/Revere trades. Darin is likely a darn good guy and good ballplayer, but clearly he is not considered the long term solution at CF. 4th OF are easily found (often from within), and they garner little when traded. But, If Mastroianni could be "packaged" as a starting CF, quality, young, and with years of team control, I'm convinced that the Twins could really help themself. After all, it worked with Revere, why not Mastroianni?--and the "risk" is zero.