Re: No more DH for Reds -- who sits?
FWIW, the Reds offense went south without Hairston and he fills two needs -- righty bat and high OBP (lead off). Against lefties, I think it would be a very bad move to sit Hairston. (I would play him against righties too, but that's me.)
Griffey should be the one sitting against lefties most times. He hasn't hit lefties and could use the reduced schedule at this stage. I'm not sure this works politically, but it works baseball wise.
I agree that the good hitting this year by Hairston and Keppinger are pleasant surprises and a good "problem" to have. Right now they have, respectively, .370 and .380 OBPs. That's what the Reds need at the top of the lineup. With Dunn's high OBP I would consider hitting him third. That's how the top of a batting order should work.
As for Hairston's impending decline, over the years in sports I've seen many players develop certain skills later in their careers. I think Hairston may have learned to hit to all fields and to become a good contact, OBP man. Since he is also versatile in the field, I wouldn't be so fast to discard him. He sure fills a role on this team right now.