On the surface, it looks like the high ranking our farm has is the result of Chapman and Whitlock carrying the numbers to those heights. While it's true they have made a big impact (1.97 ERA in 110 IP, before tonight's game,) the rest of the pen has been very respectable.
Of course, not everyone, but the rest of the pen, combined is at a 3.85 ERA in 357 IP. That's better than our SP'er ERA of 3.92!!!
Now, consider that 9 of our RP'ers (Kelly, Hicks, Hendriks, IC, Moran, Fulmer, Stock, Buehler and Toro) let up 58 ERs in 69.2 IP for a 7.50 ERA, the others not named Whitlock & Chapman have done very well, as no-names, mostly.
The "others" have pitched 287 IP at a 3.05 ERA mark, and I included these guys in that sample:
5.06 Criswell in 11 IP
4.15 Guerrero in 17 IP
3.86 Winckowski in 12 IP
and a few others over 3.05 (Bello, Slaten, Newcomb, Dobbins & Alcala)
Hats off to the pen.