And the creation of relievers is changing. Especially at the college level pitchers are being converted without being failed starters because of the growing emphasis and number of pen innings being used at that level. Because of their importance as relievers, these guys are spending 3 years in college as relievers and coming into the minors as such. With minor and major league pen needs, many of those pitchers are staying in the pen instead of being moved back as starters.
It is my personal opinion that the White Sox feel player valuations for these players may not have caught up on a level commiserate to other minor league prospect valuations as they relate to their major league counterparts.
In short major league relievers are really expensive while the minors ones have no real value. The Sox have been able to stockpile a ton of these guys. If they are able to pick up a guy like Ryan Burr for half a million in Intl cap space and then turn him into a middle to late inning reliever that is a huge surplus value. It is also one that could bring back a big time prospect if the Sox were to decide to move said reliever with three or four years of control down the road.
For example if a Vieira turns into a Kahnle down the road, we could turn a small amount of international cap space into either a big time set up guy, or a top 100 prospect. That is a huge value gain.