Article #1: Hitting Decline
Article #2: Pitching Rise
For those that don't want to read, he summarizes the articles with this:
My three observations:
* On average, Pitchers are performing at a higher level than at any point in the last 10 years. The relative value of pitchers has increased over the decade.
* Pitcher Production predictability has increased significantly over the decade.
* Similar to hitters, the degree of separation between the upper tier pitchers and the 2nd tier is less pronounced than it was in the past.