BP has translated minor league stats

[CardsFanInChiTown]

BP has a cool new feature - translated minor league stats.

 

Here's the Cubs:

 

http://baseballprospectus.com/minors/dt/CHCSYSNODIF.php

 

If non members can't see this, I'll post some numbers.

[UBlink]

Any sabremetric types have any clue what these mean?

[Mephistopheles]

Yeah I understand it, which part aren't you following?

[texascub]

What do EQA and EQR stand for on offense, and what are NERA, PERA, DELH, STUF for pitching?

[UBlink]

OK, when I go to the site there are 2 versions, one indicating NODIF, one indicating PEAK. Which is translated, how do you compare, what is most predictive?

 

Are there any stats that are theoretically comparable among the different leagues?

[Mephistopheles]

EqA stands for Equivalent Average. EqA essentially measures the efficiency of outs used. An in-depth article can be found here.

 

EqR is Equivalent Runs. It's like a counting form of EqA kind of like the relationship between H and AVG. EqR = Outs * 5 * (EqA^2.5)

 

NERA is ERA normalized to a league with a league average of 4.50 ERA. PERA takes the next step forward and normalizes the leagues BB/9, H/9 etc. This is very important when evaluating a league like the California League where the run environment is much more electric than the Southern or Eastern Leagues.

 

Delta H is a plus or minus number of how many hits the pitcher should have given up. If it's negative, he's been a bit lucky. Positive would then be unlucky.

 

Stuff score is a measure of dominance. It uses IP/G, K, BB, HR and runs allowed.

 

NODIF means that everything is normalized to league. EqA is made so the .260 is average for the league. On that sheet Mike Fontenot's .301 EqA is relative to the PCL. Peak is an estimate of what they should do three years down the road. I don't really pay attention to that sheet myself.