The Arizona Fall League finished play a couple days ago. The Pirates had seven players with Glendale, four pitchers and three position players. The pitchers got the better of it across the board. It can be tough to evaluate pitcher performance in an environment like that, though, as you have to know whether the pitcher is working on something, as opposed to simply trying to get hitters out. In the Pirates’ case, I know Mitch Keller was specifically working on his changeup and...