Tiedemann, 27, spent 6 seasons in the Texas Rangers organization after they selected him in the 8th round of the 2016 Major League Baseball Amateur Draft. Last season, Tiedemann played with the Spire City Ghost Hounds of the Atlantic League, where he made 9 appearances out of the bullpen.

The California native enjoyed his best success in 2019 with the Hickory Crawdads, the Single-A affiliate of the Texas Rangers. With the Crawdads, he posted a 4-2 record with 71 strikeouts in 27 appearances over 72.1 innings. Tiedemann climbed as high as Double-A within the Texas Rangers farm system.

The righty heads into his eighth pro campaign and will make his debut with the RailCats this season.