ok. Any evidence to suggest that NL pitchers can be as successful in the AL? I can throw over a slew for the other way. Mater of fact, when I am trying to evaluate NL performance for SPs and try to translate it to AL performance, I start with a factor of about 1.2 for most metrics... Yeah I remember your adjustments. it was something like subtract 1.5 K/9 and add 1 BB/9. There should be an adjustment but these numbers are completely ridiculous. NL pitchers don't become pumpkins when they move over to the AL and AL pitchers don't become aces when they do it.