3B, 1B, LF and RF have traditionally been the 3-6 hitters and supply the run support. 2B, SS, CF and C have been stronger D. Better OBA's hit 1/2 weaker hitters 7-8. Now if you can get a decent OPS out of an up the middle type you are doing pretty good. Like Jim Edwards. Glove came first but still had a 3-6 bat. Castro is OVERRATED. his D is lacking and he has never been a .380 OBA type. Way OVERHYPED and it shows a utter lack of knowlege of the game to over value what 200 hits bring to the team. That is why you look at SLG to see if said hitter could become an potential RBI machine or OBA if he is suited as a 1/2 hitter. Right now he is a #7 hitter on a contender and a liability at SS while lacking power to move to a corner spot. He needs to step up. Baez is looking like the future not Castro.