This is almost certainly not updated for today, but there's a current argument for the pen being 'decent' today, and that would be before you send Brown or Assad there.
In May:
7th in fWAR
1st in K/9
10th in BB/9
21st in ERA
7th in FIP
4th in xFIP
25th in BABIP, which explains the discrepancy above
Obviously they were brutal in April, and I don't want to talk out of both sides of my mouth when it comes to slicing/dicing sample sizes, but in April they were 5th in innings and May they are 15th, so there's maybe some credence to increased effectiveness coming from working a normal amount of innings