When the Mariners announced they’d be using a six-man rotation for the entire 2020 season, it was great news for two 24 year olds: Justus Sheffield and Justin Dunn. Each player locked in a spot in Seattle’s rotation, matching up back to back in an opportunity to get around 10 starts and continue their development while staking a claim on a 2021 rotation slot. The two are disparate pitchers, with the lefty Sheffield leaning into his sinker for a groundball profile, while Dunn uses his running four-seam to miss bats and induce fly outs. Nonetheless, they entered 2020 with fairly similar developmental goals.
The diverging seasons of Justus Sheffield and Justin Dunn
