David Peterson career: 22.6 K%, 9.8 BB%, 4.31 ERA, 3.91 FIP, 3.86 xFIP
David Peterson 2025: 20.7 K%, 9.0 BB%, 4.22 ERA, 3.48 FP, 3.72 FIP
David Peterson 2026: 19.7 K%, 9.4 BB%, 6.09 ERA, 3.85 FIP, 4.05 xFIP
What's the only number that stands out from his career line (over the course of 690 IP, and 123 starts), his 2025 season (Peterson made the 2025 all-star team) and his 2026? It's his ERA in this year only. He's an extreme ground ball pitcher. Did you watch game-2 of the DH yesterday? The Mets infield made 6-errors on their own. They're a -8 OAA as an infield. His LOB% this season is 60%. That is unsustainably low. It's obvious why his ERA is 6.00. It's not really a David Peterson issue.
No one should claim Peterson as a star, because he isn't. But he's also a pitcher highly dependent on infield defense and the Mets have been abysmal in this category. The Cubs are a +19 OAA on the infield, which is one of the very, very best. We should expect his ERA with the Cubs to be around the xFIP marker, if not a bit better considering his defense is going to help him out in this regards.
Don't be a single issue voter and just attach yourself to the ERA. The story of David Peterson is deeper than his 6.00 ERA.