Originally Posted by DSpivack
Pitchers may not be called on to go over 300 innings anymore, but the trade off is that today's pitchers mostly have longer careers than they did in the past (at least for those that are good enough to stick around).
I don't think that's actually true. I did a comparison of all members of starting rotations from 1966 and 1996, and the starters from 1966 not only pitched more innings over their careers, on average their careers lasted considerably longer. I don't have the numbers anymore, but I believe the number of starting pitchers from '66 who lasted 10+ years in the majors was over 80%, significantly higher than those from '96.