I'm not sure how it proves anything like that-anybody can be taught to take more walks at the expense of some of their hits. What San Diego is trying to do is instill plate discipline and make their hitters better, which I don't think this evidence has any proof for that at all. Edit: I do think plate discipline to a point is learned (some of it is natural, and some of it can be improved)-but this shows me very little except that they pushed their hitters to take more pitchers, which in a couple leagues caused high walks, high SO's, and very low AVG and SLG. That's not true at all. The high strike outs, low average, and slugging are independent of plate discipline. It shows how bad some of the players are in their system. Adam Dunn has high strikes, low average and great slugging. I can't agree with the bolded statement. While I in no way believe that lower AVG and SLG numbers are the result of their more patient approach at the plate (it probably has a lot to do with a lack of talent, by and large), they are definitely not independent of one another. They're all linked pretty closely as the result of a general approach at the plate.