to be better than a list that gives Tillman a C+…

You do know that stuff has nothing to do with the number of walks you have. He has great stuff(meaning the pitches he throws). His control is an issue, but his stuff is not.

with the exception of July. This improvement is very positive. In August, for example, the last month of the year, he pitched 35.2 IP and struck out 51 batters while walking only 11. As ERA is apparently an important stat for you, he only gave up 7 ERs, giving him an ERA just below 1.80.

Other than that it seems like the only non-ERA stat that you care about is walks, you also seem to not be at all interested in age relative to league. Yes, Tillman got beat up the previous two years, but he was also pitching against much older competition. In 2007, for example, he had a 3.55 ERA (and barely 3 walks per 9 innings) in A ball at age 19. When he was promoted to A+ ball at 19, by far the youngest pitcher at that level, he got knocked around. That Tillman was able to not simply survive, but excel (with a 3.18 ERA) in AA at age 20, the youngest player at the level, is astounding.

Clearly you know absolutely nothing about scouting.

ERA isn’t a stat that reflects solely on the pitcher, which is what you need to use to accurately evaluate pitchers. ERA is effected by the defense behind you, which is notoriously poor in the minors. Try using FIP, it helps you understand how well a pitcher pitched, regardless of how well his fielders fielded. Tillman had a FIP’s of 4.73, 4.29, and 3.57 the last three years. If you use a site like minorleaguesplits.com you can normalize for luck and park as well. Don’t be afraid of using new and better metrics instead of relying on things like ERA.