Agreed, especially when used in that context.  Similar to the Ron Liebman situation (above), if one gently eased in mentions of something this obscure, it might seem acceptable.  But when you throw it in overhand like this, it just seems awkward and out-of-place.  If no one can find references to this stat outside of baseball-ref, I'd say just revert completely.  Esp. if the person doesn't want to discuss.  —