The Pirates were 9-1 before their 4-6 stretch, but the trade deadline saw them deal Falter, Bednar, Ferguson, Hayes, and Frazier.
They still have a bunch of guys in the lineup that you've at least heard of, but they weren't scoring much before the trades - they're dead last in runs scored. While the pitching has been reasonably good, losing Bednar and Ferguson out of the pen is a gut punch - still have a couple guys with good numbers, but now sporting at least 3 guys with less than 10 appearances with the big club.
More than most teams, getting to their pen in the 5th or 6th should lead to joy.