Pivetta was nearly our ace, until last night.
I'm not sure how one bad night "proves" he's a number 5.
Now, his career has shown he looks like a 5- maybe worse, but he seems to have turned things around, somewhat, this year. Maybe he's just a late bloomer.
It's strange that he's doing so well despite his worse BB/9 (5.6) of his career- by far, but his FIP is 3.34- thanks to his super low H/9 (6.2) and HR/9 (0.3).
FIP by Sox starters:
2.13 Eovaldi
3.34 Pivetta
3.54 ERod
3.59 Perez
4.02 Richards