are we doing positional adjustments right?

[beanumber]

See (http://tangotiger.com/index.php/site/comments/openwar)

Particularly comment 23

[beanumber]

The offending line

mod.bat = lm(delta.bat ~ as.factor(batterPos), data = data[, c("delta.bat", "batterPos")])

Could we make an option to have this as a null model and then add it in somewhere else?