Cabrera's contract was selected by the Cardinals on Tuesday.
St. Louis protected Cabrera from the Rule 5 draft by placing him on the 40-man roster. The 22-year-old lefty spent the majority of his 2018 season with the Rays' Double-A Montgomery affiliate before being traded to the Cardinals just prior to the July deadline. He accrued a 4.27 ERA with 145 punchouts over 137 innings at Double-A last season.