I'm not sure if the length of appearance is a function of they have more pitchers to use, or whether since they have so many, they don't throw so many innings. A chicken-egg discussion. I remember when you had starters, long men, now called middle relievers, and relievers (with maybe one designated closer). If you didn't have one closer you had a righty/lefty combo - Mossi and Narleski, Brosnan and Henry. Of course, they had 10 man or fewer staffs. I liked the old way better. Later OE: they had fewer roster moves available to them back then. I'm not sure how that impacts this discussion but might be a factor, especially guys brought up and then sent right back down after pitching one game.