He played baseball at Moore Catholic High School, where he received All-City, All-Staten Island, and Advance All-Star honors.

He split the 2016 season between Ogden and the Single–A Great Lakes Loons and Triple–A Oklahoma City Dodgers, accumulating a 2.72 ERA with 60 strikeouts in 24 games.

In 2017, Spitzbarth played for the High–A Rancho Cucamonga Quakes and Double–A Tulsa Drillers, pitching to a 2.45 ERA with 77 strikeouts in 69+2⁄3 innings of work.

The following season, Spitzbarth split time between Tulsa and Oklahoma City, registering a 4.32 ERA with 86 strikeouts in 66+2⁄3 innings pitched across 40 appearances.

[7] Spitzbarth made 44 combined appearances for the Double–A Erie SeaWolves and the Triple–A Toledo Mud Hens, logging a 6–0 record and 2.85 ERA with 46 strikeouts over 53+2⁄3 innings pitched.

[9] However, prior to making an appearance for the team, on May 20, Spitzbarth signed a minor league contract with the Cincinnati Reds organization.