Comments on: Minor League Depth — Pitching, Part 2 (Upper Level Relievers) Your best source for news on the Pittsburgh Pirates and their minor league system. Thu, 18 Sep 2014 11:25:00 +0000 hourly 1 By: Lee Young Fri, 13 Jan 2012 15:14:00 +0000 When you see how many top prospects are now relievers, it is almost scary. The attrition rate for high picks is indeed great.