If he's in the pen, you may as well use him. Most of the guys out there can't go more than an inning. We know Buch can at least go 3.
I just don't get why Farrell avoids certain players. Brentz was great before the break. Instead of starting him while Betts is hurt, they throw Martinez out there. Ross only had like 3 appearances in June. Buchholz is less likely to pitch than Noe. I don't get it.