First off...I won my last 12 team H2H and am in first again this year. My advice is keep Napoli. I own Mauer (on DL right now) and Castro. I would seriously consider keeping Castro as well...as Houston has no real threat other than him at catcher...he will play a lot. Cosart would be my waiver wire pickup...Think we have seen Locke best this year and he will steadily decline from here on.