Kevin Seitzer was the Diamondbacks hitting coach in 2007. He lasted half a season – he was replaced in July. Although I did not find batting wOBA for his tenure, I estimated it at .314. His coaching journey took him to the Braves. He was the Braves pitching coach from 2015 through 2024. That’s a long time!
It wasn’t until his third season with the Braves that the team wOBA broke above .315. That’s a meaningful number. The Braves’ wOBA stayed above .315 until the 2024 season when it fell to .315. Kevin Seitzer did not return to his position.