When one pitcher went down, another came up. As the Athletics battled into September with their ragtag collection of kids and bargains, part of what kept them fighting was an influx of young arms, immediately ready for big league competition. The likes of A.J. Griffin and Dan Straily, who were never big-name prospects, filled in capably for the experienced veterans. More than anything else, the A's of the first dozen years of the new millennium have been an organization built upon the development of young pitchers.